66665450

素因数分解:

$2^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:383

約数の個数: 48

約数和(自身を含む): 127759680

約数和(自身を除く): 61094230

約数列:

[1, 2, 5, 10, 25, 50, 71, 89, 142, 178, 211, 355, 422, 445, 710, 890, 1055, 1775, 2110, 2225, 3550, 4450, 5275, 6319, 10550, 12638, 14981, 18779, 29962, 31595, 37558, 63190, 74905, 93895, 149810, 157975, 187790, 315950, 374525, 469475, 749050, 938950, 1333309, 2666618, 6666545, 13333090, 33332725, 66665450]

約数ペア:

[(1, 66665450), (2, 33332725), (5, 13333090), (10, 6666545), (25, 2666618), (50, 1333309), (71, 938950), (89, 749050), (142, 469475), (178, 374525), (211, 315950), (355, 187790), (422, 157975), (445, 149810), (710, 93895), (890, 74905), (1055, 63190), (1775, 37558), (2110, 31595), (2225, 29962), (3550, 18779), (4450, 14981), (5275, 12638), (6319, 10550)]