31279275

素因数分解:

$3^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:173

約数の個数: 72

約数和(自身を含む): 59366736

約数和(自身を除く): 28087461

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 53, 61, 75, 129, 159, 183, 215, 225, 265, 305, 387, 477, 549, 645, 795, 915, 1075, 1325, 1525, 1935, 2279, 2385, 2623, 2745, 3225, 3233, 3975, 4575, 6837, 7869, 9675, 9699, 11395, 11925, 13115, 13725, 16165, 20511, 23607, 29097, 34185, 39345, 48495, 56975, 65575, 80825, 102555, 118035, 139019, 145485, 170925, 196725, 242475, 417057, 512775, 590175, 695095, 727425, 1251171, 2085285, 3475475, 6255855, 10426425, 31279275]

約数ペア:

[(1, 31279275), (3, 10426425), (5, 6255855), (9, 3475475), (15, 2085285), (25, 1251171), (43, 727425), (45, 695095), (53, 590175), (61, 512775), (75, 417057), (129, 242475), (159, 196725), (183, 170925), (215, 145485), (225, 139019), (265, 118035), (305, 102555), (387, 80825), (477, 65575), (549, 56975), (645, 48495), (795, 39345), (915, 34185), (1075, 29097), (1325, 23607), (1525, 20511), (1935, 16165), (2279, 13725), (2385, 13115), (2623, 11925), (2745, 11395), (3225, 9699), (3233, 9675), (3975, 7869), (4575, 6837)]