1213232720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{1153}}^1\times {\mathrm{1879}}^1$

素因数の和:3052

約数の個数: 80

約数和(自身を含む): 3228245760

約数和(自身を除く): 2015013040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 1153, 1879, 2306, 3758, 4612, 5765, 7516, 8071, 9224, 9395, 11530, 13153, 15032, 16142, 18448, 18790, 23060, 26306, 30064, 32284, 37580, 40355, 46120, 52612, 64568, 65765, 75160, 80710, 92240, 105224, 129136, 131530, 150320, 161420, 210448, 263060, 322840, 526120, 645680, 1052240, 2166487, 4332974, 8665948, 10832435, 15165409, 17331896, 21664870, 30330818, 34663792, 43329740, 60661636, 75827045, 86659480, 121323272, 151654090, 173318960, 242646544, 303308180, 606616360, 1213232720]

約数ペア:

[(1, 1213232720), (2, 606616360), (4, 303308180), (5, 242646544), (7, 173318960), (8, 151654090), (10, 121323272), (14, 86659480), (16, 75827045), (20, 60661636), (28, 43329740), (35, 34663792), (40, 30330818), (56, 21664870), (70, 17331896), (80, 15165409), (112, 10832435), (140, 8665948), (280, 4332974), (560, 2166487), (1153, 1052240), (1879, 645680), (2306, 526120), (3758, 322840), (4612, 263060), (5765, 210448), (7516, 161420), (8071, 150320), (9224, 131530), (9395, 129136), (11530, 105224), (13153, 92240), (15032, 80710), (16142, 75160), (18448, 65765), (18790, 64568), (23060, 52612), (26306, 46120), (30064, 40355), (32284, 37580)]