64856420

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{53161}}^1$

素因数の和:53231

約数の個数: 24

約数和(自身を含む): 138433848

約数和(自身を除く): 73577428

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 53161, 106322, 212644, 265805, 531610, 1063220, 3242821, 6485642, 12971284, 16214105, 32428210, 64856420]

約数ペア:

[(1, 64856420), (2, 32428210), (4, 16214105), (5, 12971284), (10, 6485642), (20, 3242821), (61, 1063220), (122, 531610), (244, 265805), (305, 212644), (610, 106322), (1220, 53161)]