20990106

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{577}}^1$

素因数の和:675

約数の個数: 48

約数和(自身を含む): 47608704

約数和(自身を除く): 26618598

約数列:

[1, 2, 3, 6, 9, 18, 43, 47, 86, 94, 129, 141, 258, 282, 387, 423, 577, 774, 846, 1154, 1731, 2021, 3462, 4042, 5193, 6063, 10386, 12126, 18189, 24811, 27119, 36378, 49622, 54238, 74433, 81357, 148866, 162714, 223299, 244071, 446598, 488142, 1166117, 2332234, 3498351, 6996702, 10495053, 20990106]

約数ペア:

[(1, 20990106), (2, 10495053), (3, 6996702), (6, 3498351), (9, 2332234), (18, 1166117), (43, 488142), (47, 446598), (86, 244071), (94, 223299), (129, 162714), (141, 148866), (258, 81357), (282, 74433), (387, 54238), (423, 49622), (577, 36378), (774, 27119), (846, 24811), (1154, 18189), (1731, 12126), (2021, 10386), (3462, 6063), (4042, 5193)]