257891520

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{268637}}^1$

素因数の和:268657

約数の個数: 56

約数和(自身を含む): 818808624

約数和(自身を除く): 560917104

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 160, 192, 240, 320, 480, 960, 268637, 537274, 805911, 1074548, 1343185, 1611822, 2149096, 2686370, 3223644, 4029555, 4298192, 5372740, 6447288, 8059110, 8596384, 10745480, 12894576, 16118220, 17192768, 21490960, 25789152, 32236440, 42981920, 51578304, 64472880, 85963840, 128945760, 257891520]

約数ペア:

[(1, 257891520), (2, 128945760), (3, 85963840), (4, 64472880), (5, 51578304), (6, 42981920), (8, 32236440), (10, 25789152), (12, 21490960), (15, 17192768), (16, 16118220), (20, 12894576), (24, 10745480), (30, 8596384), (32, 8059110), (40, 6447288), (48, 5372740), (60, 4298192), (64, 4029555), (80, 3223644), (96, 2686370), (120, 2149096), (160, 1611822), (192, 1343185), (240, 1074548), (320, 805911), (480, 537274), (960, 268637)]