161393980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{38611}}^1$

素因数の和:38650

約数の個数: 48

約数和(自身を含む): 389208960

約数和(自身を除く): 227814980

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 38611, 77222, 154444, 193055, 386110, 424721, 733609, 772220, 849442, 1467218, 1698884, 2123605, 2934436, 3668045, 4247210, 7336090, 8069699, 8494420, 14672180, 16139398, 32278796, 40348495, 80696990, 161393980]

約数ペア:

[(1, 161393980), (2, 80696990), (4, 40348495), (5, 32278796), (10, 16139398), (11, 14672180), (19, 8494420), (20, 8069699), (22, 7336090), (38, 4247210), (44, 3668045), (55, 2934436), (76, 2123605), (95, 1698884), (110, 1467218), (190, 849442), (209, 772220), (220, 733609), (380, 424721), (418, 386110), (836, 193055), (1045, 154444), (2090, 77222), (4180, 38611)]