400984640

素因数分解:

$2^6\times 5^1\times 7^2\times {\mathrm{107}}^1\times {\mathrm{239}}^1$

素因数の和:377

約数の個数: 168

約数和(自身を含む): 1125809280

約数和(自身を除く): 724824640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 107, 112, 140, 160, 196, 214, 224, 239, 245, 280, 320, 392, 428, 448, 478, 490, 535, 560, 749, 784, 856, 956, 980, 1070, 1120, 1195, 1498, 1568, 1673, 1712, 1912, 1960, 2140, 2240, 2390, 2996, 3136, 3346, 3424, 3745, 3824, 3920, 4280, 4780, 5243, 5992, 6692, 6848, 7490, 7648, 7840, 8365, 8560, 9560, 10486, 11711, 11984, 13384, 14980, 15296, 15680, 16730, 17120, 19120, 20972, 23422, 23968, 25573, 26215, 26768, 29960, 33460, 34240, 38240, 41944, 46844, 47936, 51146, 52430, 53536, 58555, 59920, 66920, 76480, 83888, 93688, 102292, 104860, 107072, 117110, 119840, 127865, 133840, 167776, 179011, 187376, 204584, 209720, 234220, 239680, 255730, 267680, 335552, 358022, 374752, 409168, 419440, 468440, 511460, 535360, 716044, 749504, 818336, 838880, 895055, 936880, 1022920, 1253077, 1432088, 1636672, 1677760, 1790110, 1873760, 2045840, 2506154, 2864176, 3580220, 3747520, 4091680, 5012308, 5728352, 6265385, 7160440, 8183360, 10024616, 11456704, 12530770, 14320880, 20049232, 25061540, 28641760, 40098464, 50123080, 57283520, 80196928, 100246160, 200492320, 400984640]

約数ペア:

[(1, 400984640), (2, 200492320), (4, 100246160), (5, 80196928), (7, 57283520), (8, 50123080), (10, 40098464), (14, 28641760), (16, 25061540), (20, 20049232), (28, 14320880), (32, 12530770), (35, 11456704), (40, 10024616), (49, 8183360), (56, 7160440), (64, 6265385), (70, 5728352), (80, 5012308), (98, 4091680), (107, 3747520), (112, 3580220), (140, 2864176), (160, 2506154), (196, 2045840), (214, 1873760), (224, 1790110), (239, 1677760), (245, 1636672), (280, 1432088), (320, 1253077), (392, 1022920), (428, 936880), (448, 895055), (478, 838880), (490, 818336), (535, 749504), (560, 716044), (749, 535360), (784, 511460), (856, 468440), (956, 419440), (980, 409168), (1070, 374752), (1120, 358022), (1195, 335552), (1498, 267680), (1568, 255730), (1673, 239680), (1712, 234220), (1912, 209720), (1960, 204584), (2140, 187376), (2240, 179011), (2390, 167776), (2996, 133840), (3136, 127865), (3346, 119840), (3424, 117110), (3745, 107072), (3824, 104860), (3920, 102292), (4280, 93688), (4780, 83888), (5243, 76480), (5992, 66920), (6692, 59920), (6848, 58555), (7490, 53536), (7648, 52430), (7840, 51146), (8365, 47936), (8560, 46844), (9560, 41944), (10486, 38240), (11711, 34240), (11984, 33460), (13384, 29960), (14980, 26768), (15296, 26215), (15680, 25573), (16730, 23968), (17120, 23422), (19120, 20972)]