20631690

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{9967}}^1$

素因数の和:10003

約数の個数: 48

約数和(自身を含む): 55980288

約数和(自身を除く): 35348598

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 23, 30, 45, 46, 69, 90, 115, 138, 207, 230, 345, 414, 690, 1035, 2070, 9967, 19934, 29901, 49835, 59802, 89703, 99670, 149505, 179406, 229241, 299010, 448515, 458482, 687723, 897030, 1146205, 1375446, 2063169, 2292410, 3438615, 4126338, 6877230, 10315845, 20631690]

約数ペア:

[(1, 20631690), (2, 10315845), (3, 6877230), (5, 4126338), (6, 3438615), (9, 2292410), (10, 2063169), (15, 1375446), (18, 1146205), (23, 897030), (30, 687723), (45, 458482), (46, 448515), (69, 299010), (90, 229241), (115, 179406), (138, 149505), (207, 99670), (230, 89703), (345, 59802), (414, 49835), (690, 29901), (1035, 19934), (2070, 9967)]