81531868

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{821}}^1$

素因数の和:934

約数の個数: 48

約数和(自身を含む): 162677088

約数和(自身を除く): 81145220

約数列:

[1, 2, 4, 11, 22, 37, 44, 61, 74, 122, 148, 244, 407, 671, 814, 821, 1342, 1628, 1642, 2257, 2684, 3284, 4514, 9028, 9031, 18062, 24827, 30377, 36124, 49654, 50081, 60754, 99308, 100162, 121508, 200324, 334147, 550891, 668294, 1101782, 1336588, 1852997, 2203564, 3705994, 7411988, 20382967, 40765934, 81531868]

約数ペア:

[(1, 81531868), (2, 40765934), (4, 20382967), (11, 7411988), (22, 3705994), (37, 2203564), (44, 1852997), (61, 1336588), (74, 1101782), (122, 668294), (148, 550891), (244, 334147), (407, 200324), (671, 121508), (814, 100162), (821, 99308), (1342, 60754), (1628, 50081), (1642, 49654), (2257, 36124), (2684, 30377), (3284, 24827), (4514, 18062), (9028, 9031)]