1620802400

素因数分解:

$2^5\times 5^2\times 7^2\times {\mathrm{173}}^1\times {\mathrm{239}}^1$

素因数の和:446

約数の個数: 216

約数和(自身を含む): 4648764960

約数和(自身を除く): 3027962560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 49, 50, 56, 70, 80, 98, 100, 112, 140, 160, 173, 175, 196, 200, 224, 239, 245, 280, 346, 350, 392, 400, 478, 490, 560, 692, 700, 784, 800, 865, 956, 980, 1120, 1195, 1211, 1225, 1384, 1400, 1568, 1673, 1730, 1912, 1960, 2390, 2422, 2450, 2768, 2800, 3346, 3460, 3824, 3920, 4325, 4780, 4844, 4900, 5536, 5600, 5975, 6055, 6692, 6920, 7648, 7840, 8365, 8477, 8650, 9560, 9688, 9800, 11711, 11950, 12110, 13384, 13840, 16730, 16954, 17300, 19120, 19376, 19600, 23422, 23900, 24220, 26768, 27680, 30275, 33460, 33908, 34600, 38240, 38752, 39200, 41347, 41825, 42385, 46844, 47800, 48440, 53536, 58555, 60550, 66920, 67816, 69200, 82694, 83650, 84770, 93688, 95600, 96880, 117110, 121100, 133840, 135632, 138400, 165388, 167300, 169540, 187376, 191200, 193760, 206735, 211925, 234220, 242200, 267680, 271264, 289429, 292775, 330776, 334600, 339080, 374752, 413470, 423850, 468440, 484400, 578858, 585550, 661552, 669200, 678160, 826940, 847700, 936880, 968800, 1033675, 1157716, 1171100, 1323104, 1338400, 1356320, 1447145, 1653880, 1695400, 1873760, 2026003, 2067350, 2315432, 2342200, 2894290, 3307760, 3390800, 4052006, 4134700, 4630864, 4684400, 5788580, 6615520, 6781600, 7235725, 8104012, 8269400, 9261728, 9368800, 10130015, 11577160, 14471450, 16208024, 16538800, 20260030, 23154320, 28942900, 32416048, 33077600, 40520060, 46308640, 50650075, 57885800, 64832096, 81040120, 101300150, 115771600, 162080240, 202600300, 231543200, 324160480, 405200600, 810401200, 1620802400]

約数ペア:

[(1, 1620802400), (2, 810401200), (4, 405200600), (5, 324160480), (7, 231543200), (8, 202600300), (10, 162080240), (14, 115771600), (16, 101300150), (20, 81040120), (25, 64832096), (28, 57885800), (32, 50650075), (35, 46308640), (40, 40520060), (49, 33077600), (50, 32416048), (56, 28942900), (70, 23154320), (80, 20260030), (98, 16538800), (100, 16208024), (112, 14471450), (140, 11577160), (160, 10130015), (173, 9368800), (175, 9261728), (196, 8269400), (200, 8104012), (224, 7235725), (239, 6781600), (245, 6615520), (280, 5788580), (346, 4684400), (350, 4630864), (392, 4134700), (400, 4052006), (478, 3390800), (490, 3307760), (560, 2894290), (692, 2342200), (700, 2315432), (784, 2067350), (800, 2026003), (865, 1873760), (956, 1695400), (980, 1653880), (1120, 1447145), (1195, 1356320), (1211, 1338400), (1225, 1323104), (1384, 1171100), (1400, 1157716), (1568, 1033675), (1673, 968800), (1730, 936880), (1912, 847700), (1960, 826940), (2390, 678160), (2422, 669200), (2450, 661552), (2768, 585550), (2800, 578858), (3346, 484400), (3460, 468440), (3824, 423850), (3920, 413470), (4325, 374752), (4780, 339080), (4844, 334600), (4900, 330776), (5536, 292775), (5600, 289429), (5975, 271264), (6055, 267680), (6692, 242200), (6920, 234220), (7648, 211925), (7840, 206735), (8365, 193760), (8477, 191200), (8650, 187376), (9560, 169540), (9688, 167300), (9800, 165388), (11711, 138400), (11950, 135632), (12110, 133840), (13384, 121100), (13840, 117110), (16730, 96880), (16954, 95600), (17300, 93688), (19120, 84770), (19376, 83650), (19600, 82694), (23422, 69200), (23900, 67816), (24220, 66920), (26768, 60550), (27680, 58555), (30275, 53536), (33460, 48440), (33908, 47800), (34600, 46844), (38240, 42385), (38752, 41825), (39200, 41347)]