128960

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1$

素因数の和:61

約数の個数: 56

約数和(自身を含む): 341376

約数和(自身を除く): 212416

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 130, 155, 160, 208, 248, 260, 310, 320, 403, 416, 496, 520, 620, 806, 832, 992, 1040, 1240, 1612, 1984, 2015, 2080, 2480, 3224, 4030, 4160, 4960, 6448, 8060, 9920, 12896, 16120, 25792, 32240, 64480, 128960]

約数ペア:

[(1, 128960), (2, 64480), (4, 32240), (5, 25792), (8, 16120), (10, 12896), (13, 9920), (16, 8060), (20, 6448), (26, 4960), (31, 4160), (32, 4030), (40, 3224), (52, 2480), (62, 2080), (64, 2015), (65, 1984), (80, 1612), (104, 1240), (124, 1040), (130, 992), (155, 832), (160, 806), (208, 620), (248, 520), (260, 496), (310, 416), (320, 403)]