257764360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{271}}^1$

素因数の和:411

約数の個数: 128

約数和(自身を含む): 689356800

約数和(自身を除く): 431592440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 43, 56, 70, 79, 86, 140, 158, 172, 215, 271, 280, 301, 316, 344, 395, 430, 542, 553, 602, 632, 790, 860, 1084, 1106, 1204, 1355, 1505, 1580, 1720, 1897, 2168, 2212, 2408, 2710, 2765, 3010, 3160, 3397, 3794, 4424, 5420, 5530, 6020, 6794, 7588, 9485, 10840, 11060, 11653, 12040, 13588, 15176, 16985, 18970, 21409, 22120, 23306, 23779, 27176, 33970, 37940, 42818, 46612, 47558, 58265, 67940, 75880, 81571, 85636, 93224, 95116, 107045, 116530, 118895, 135880, 149863, 163142, 171272, 190232, 214090, 233060, 237790, 299726, 326284, 407855, 428180, 466120, 475580, 599452, 652568, 749315, 815710, 856360, 920587, 951160, 1198904, 1498630, 1631420, 1841174, 2997260, 3262840, 3682348, 4602935, 5994520, 6444109, 7364696, 9205870, 12888218, 18411740, 25776436, 32220545, 36823480, 51552872, 64441090, 128882180, 257764360]

約数ペア:

[(1, 257764360), (2, 128882180), (4, 64441090), (5, 51552872), (7, 36823480), (8, 32220545), (10, 25776436), (14, 18411740), (20, 12888218), (28, 9205870), (35, 7364696), (40, 6444109), (43, 5994520), (56, 4602935), (70, 3682348), (79, 3262840), (86, 2997260), (140, 1841174), (158, 1631420), (172, 1498630), (215, 1198904), (271, 951160), (280, 920587), (301, 856360), (316, 815710), (344, 749315), (395, 652568), (430, 599452), (542, 475580), (553, 466120), (602, 428180), (632, 407855), (790, 326284), (860, 299726), (1084, 237790), (1106, 233060), (1204, 214090), (1355, 190232), (1505, 171272), (1580, 163142), (1720, 149863), (1897, 135880), (2168, 118895), (2212, 116530), (2408, 107045), (2710, 95116), (2765, 93224), (3010, 85636), (3160, 81571), (3397, 75880), (3794, 67940), (4424, 58265), (5420, 47558), (5530, 46612), (6020, 42818), (6794, 37940), (7588, 33970), (9485, 27176), (10840, 23779), (11060, 23306), (11653, 22120), (12040, 21409), (13588, 18970), (15176, 16985)]