161307880

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{130087}}^1$

素因数の和:130129

約数の個数: 32

約数和(自身を含む): 374653440

約数和(自身を除く): 213345560

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 130087, 260174, 520348, 650435, 1040696, 1300870, 2601740, 4032697, 5203480, 8065394, 16130788, 20163485, 32261576, 40326970, 80653940, 161307880]

約数ペア:

[(1, 161307880), (2, 80653940), (4, 40326970), (5, 32261576), (8, 20163485), (10, 16130788), (20, 8065394), (31, 5203480), (40, 4032697), (62, 2601740), (124, 1300870), (155, 1040696), (248, 650435), (310, 520348), (620, 260174), (1240, 130087)]