20401690

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{829}}^1$

素因数の和:966

約数の個数: 32

約数和(自身を含む): 38724480

約数和(自身を除く): 18322790

約数列:

[1, 2, 5, 10, 23, 46, 107, 115, 214, 230, 535, 829, 1070, 1658, 2461, 4145, 4922, 8290, 12305, 19067, 24610, 38134, 88703, 95335, 177406, 190670, 443515, 887030, 2040169, 4080338, 10200845, 20401690]

約数ペア:

[(1, 20401690), (2, 10200845), (5, 4080338), (10, 2040169), (23, 887030), (46, 443515), (107, 190670), (115, 177406), (214, 95335), (230, 88703), (535, 38134), (829, 24610), (1070, 19067), (1658, 12305), (2461, 8290), (4145, 4922)]