7642040

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{557}}^1$

素因数の和:589

約数の個数: 64

約数和(自身を含む): 20088000

約数和(自身を除く): 12445960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 343, 392, 490, 557, 686, 980, 1114, 1372, 1715, 1960, 2228, 2744, 2785, 3430, 3899, 4456, 5570, 6860, 7798, 11140, 13720, 15596, 19495, 22280, 27293, 31192, 38990, 54586, 77980, 109172, 136465, 155960, 191051, 218344, 272930, 382102, 545860, 764204, 955255, 1091720, 1528408, 1910510, 3821020, 7642040]

約数ペア:

[(1, 7642040), (2, 3821020), (4, 1910510), (5, 1528408), (7, 1091720), (8, 955255), (10, 764204), (14, 545860), (20, 382102), (28, 272930), (35, 218344), (40, 191051), (49, 155960), (56, 136465), (70, 109172), (98, 77980), (140, 54586), (196, 38990), (245, 31192), (280, 27293), (343, 22280), (392, 19495), (490, 15596), (557, 13720), (686, 11140), (980, 7798), (1114, 6860), (1372, 5570), (1715, 4456), (1960, 3899), (2228, 3430), (2744, 2785)]