31289830

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{21881}}^1$

素因数の和:21912

約数の個数: 32

約数和(自身を含む): 66171168

約数和(自身を除く): 34881338

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 130, 143, 286, 715, 1430, 21881, 43762, 109405, 218810, 240691, 284453, 481382, 568906, 1203455, 1422265, 2406910, 2844530, 3128983, 6257966, 15644915, 31289830]

約数ペア:

[(1, 31289830), (2, 15644915), (5, 6257966), (10, 3128983), (11, 2844530), (13, 2406910), (22, 1422265), (26, 1203455), (55, 568906), (65, 481382), (110, 284453), (130, 240691), (143, 218810), (286, 109405), (715, 43762), (1430, 21881)]