72436220

素因数分解:

$2^2\times 5^1\times {\mathrm{1801}}^1\times {\mathrm{2011}}^1$

素因数の和:3821

約数の個数: 24

約数和(自身を含む): 152276208

約数和(自身を除く): 79839988

約数列:

[1, 2, 4, 5, 10, 20, 1801, 2011, 3602, 4022, 7204, 8044, 9005, 10055, 18010, 20110, 36020, 40220, 3621811, 7243622, 14487244, 18109055, 36218110, 72436220]

約数ペア:

[(1, 72436220), (2, 36218110), (4, 18109055), (5, 14487244), (10, 7243622), (20, 3621811), (1801, 40220), (2011, 36020), (3602, 20110), (4022, 18010), (7204, 10055), (8044, 9005)]