128464140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{305867}}^1$

素因数の和:305886

約数の個数: 48

約数和(自身を含む): 411086592

約数和(自身を除く): 282622452

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 305867, 611734, 917601, 1223468, 1529335, 1835202, 2141069, 3058670, 3670404, 4282138, 4588005, 6117340, 6423207, 8564276, 9176010, 10705345, 12846414, 18352020, 21410690, 25692828, 32116035, 42821380, 64232070, 128464140]

約数ペア:

[(1, 128464140), (2, 64232070), (3, 42821380), (4, 32116035), (5, 25692828), (6, 21410690), (7, 18352020), (10, 12846414), (12, 10705345), (14, 9176010), (15, 8564276), (20, 6423207), (21, 6117340), (28, 4588005), (30, 4282138), (35, 3670404), (42, 3058670), (60, 2141069), (70, 1835202), (84, 1529335), (105, 1223468), (140, 917601), (210, 611734), (420, 305867)]