64636820

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{52981}}^1$

素因数の和:53051

約数の個数: 24

約数和(自身を含む): 137965128

約数和(自身を除く): 73328308

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 52981, 105962, 211924, 264905, 529810, 1059620, 3231841, 6463682, 12927364, 16159205, 32318410, 64636820]

約数ペア:

[(1, 64636820), (2, 32318410), (4, 16159205), (5, 12927364), (10, 6463682), (20, 3231841), (61, 1059620), (122, 529810), (244, 264905), (305, 211924), (610, 105962), (1220, 52981)]