245640980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{944773}}^1$

素因数の和:944795

約数の個数: 24

約数和(自身を含む): 555527112

約数和(自身を除く): 309886132

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 944773, 1889546, 3779092, 4723865, 9447730, 12282049, 18895460, 24564098, 49128196, 61410245, 122820490, 245640980]

約数ペア:

[(1, 245640980), (2, 122820490), (4, 61410245), (5, 49128196), (10, 24564098), (13, 18895460), (20, 12282049), (26, 9447730), (52, 4723865), (65, 3779092), (130, 1889546), (260, 944773)]