1561455420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{3717751}}^1$

素因数の和:3717770

約数の個数: 48

約数和(自身を含む): 4996658688

約数和(自身を除く): 3435203268

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, 3717751, 7435502, 11153253, 14871004, 18588755, 22306506, 26024257, 37177510, 44613012, 52048514, 55766265, 74355020, 78072771, 104097028, 111532530, 130121285, 156145542, 223065060, 260242570, 312291084, 390363855, 520485140, 780727710, 1561455420]

約数ペア:

[(1, 1561455420), (2, 780727710), (3, 520485140), (4, 390363855), (5, 312291084), (6, 260242570), (7, 223065060), (10, 156145542), (12, 130121285), (14, 111532530), (15, 104097028), (20, 78072771), (21, 74355020), (28, 55766265), (30, 52048514), (35, 44613012), (42, 37177510), (60, 26024257), (70, 22306506), (84, 18588755), (105, 14871004), (140, 11153253), (210, 7435502), (420, 3717751)]