13628020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{311}}^1\times {\mathrm{313}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 32917248

約数和(自身を除く): 19289228

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 311, 313, 622, 626, 1244, 1252, 1555, 1565, 2177, 2191, 3110, 3130, 4354, 4382, 6220, 6260, 8708, 8764, 10885, 10955, 21770, 21910, 43540, 43820, 97343, 194686, 389372, 486715, 681401, 973430, 1362802, 1946860, 2725604, 3407005, 6814010, 13628020]

約数ペア:

[(1, 13628020), (2, 6814010), (4, 3407005), (5, 2725604), (7, 1946860), (10, 1362802), (14, 973430), (20, 681401), (28, 486715), (35, 389372), (70, 194686), (140, 97343), (311, 43820), (313, 43540), (622, 21910), (626, 21770), (1244, 10955), (1252, 10885), (1555, 8764), (1565, 8708), (2177, 6260), (2191, 6220), (3110, 4382), (3130, 4354)]