21951720

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{281}}^1$

素因数の和:336

約数の個数: 192

約数和(自身を含む): 84464640

約数和(自身を除く): 62512920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 31, 35, 36, 40, 42, 45, 56, 60, 62, 63, 70, 72, 84, 90, 93, 105, 120, 124, 126, 140, 155, 168, 180, 186, 210, 217, 248, 252, 279, 280, 281, 310, 315, 360, 372, 420, 434, 465, 504, 558, 562, 620, 630, 651, 744, 840, 843, 868, 930, 1085, 1116, 1124, 1240, 1260, 1302, 1395, 1405, 1686, 1736, 1860, 1953, 1967, 2170, 2232, 2248, 2520, 2529, 2604, 2790, 2810, 3255, 3372, 3720, 3906, 3934, 4215, 4340, 5058, 5208, 5580, 5620, 5901, 6510, 6744, 7812, 7868, 8430, 8680, 8711, 9765, 9835, 10116, 11160, 11240, 11802, 12645, 13020, 15624, 15736, 16860, 17422, 17703, 19530, 19670, 20232, 23604, 25290, 26040, 26133, 29505, 33720, 34844, 35406, 39060, 39340, 43555, 47208, 50580, 52266, 59010, 60977, 69688, 70812, 78120, 78399, 78680, 87110, 88515, 101160, 104532, 118020, 121954, 130665, 141624, 156798, 174220, 177030, 182931, 209064, 236040, 243908, 261330, 304885, 313596, 348440, 354060, 365862, 391995, 487816, 522660, 548793, 609770, 627192, 708120, 731724, 783990, 914655, 1045320, 1097586, 1219540, 1463448, 1567980, 1829310, 2195172, 2439080, 2743965, 3135960, 3658620, 4390344, 5487930, 7317240, 10975860, 21951720]

約数ペア:

[(1, 21951720), (2, 10975860), (3, 7317240), (4, 5487930), (5, 4390344), (6, 3658620), (7, 3135960), (8, 2743965), (9, 2439080), (10, 2195172), (12, 1829310), (14, 1567980), (15, 1463448), (18, 1219540), (20, 1097586), (21, 1045320), (24, 914655), (28, 783990), (30, 731724), (31, 708120), (35, 627192), (36, 609770), (40, 548793), (42, 522660), (45, 487816), (56, 391995), (60, 365862), (62, 354060), (63, 348440), (70, 313596), (72, 304885), (84, 261330), (90, 243908), (93, 236040), (105, 209064), (120, 182931), (124, 177030), (126, 174220), (140, 156798), (155, 141624), (168, 130665), (180, 121954), (186, 118020), (210, 104532), (217, 101160), (248, 88515), (252, 87110), (279, 78680), (280, 78399), (281, 78120), (310, 70812), (315, 69688), (360, 60977), (372, 59010), (420, 52266), (434, 50580), (465, 47208), (504, 43555), (558, 39340), (562, 39060), (620, 35406), (630, 34844), (651, 33720), (744, 29505), (840, 26133), (843, 26040), (868, 25290), (930, 23604), (1085, 20232), (1116, 19670), (1124, 19530), (1240, 17703), (1260, 17422), (1302, 16860), (1395, 15736), (1405, 15624), (1686, 13020), (1736, 12645), (1860, 11802), (1953, 11240), (1967, 11160), (2170, 10116), (2232, 9835), (2248, 9765), (2520, 8711), (2529, 8680), (2604, 8430), (2790, 7868), (2810, 7812), (3255, 6744), (3372, 6510), (3720, 5901), (3906, 5620), (3934, 5580), (4215, 5208), (4340, 5058)]