81164860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{691}}^1\times {\mathrm{839}}^1$

素因数の和:1546

約数の個数: 48

約数和(自身を含む): 195310080

約数和(自身を除く): 114145220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 691, 839, 1382, 1678, 2764, 3356, 3455, 4195, 4837, 5873, 6910, 8390, 9674, 11746, 13820, 16780, 19348, 23492, 24185, 29365, 48370, 58730, 96740, 117460, 579749, 1159498, 2318996, 2898745, 4058243, 5797490, 8116486, 11594980, 16232972, 20291215, 40582430, 81164860]

約数ペア:

[(1, 81164860), (2, 40582430), (4, 20291215), (5, 16232972), (7, 11594980), (10, 8116486), (14, 5797490), (20, 4058243), (28, 2898745), (35, 2318996), (70, 1159498), (140, 579749), (691, 117460), (839, 96740), (1382, 58730), (1678, 48370), (2764, 29365), (3356, 24185), (3455, 23492), (4195, 19348), (4837, 16780), (5873, 13820), (6910, 11746), (8390, 9674)]