20995290

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{887}}^1$

素因数の和:1163

約数の個数: 48

約数和(自身を含む): 54857088

約数和(自身を除く): 33861798

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 263, 526, 789, 887, 1315, 1578, 1774, 2367, 2630, 2661, 3945, 4435, 4734, 5322, 7890, 7983, 8870, 11835, 13305, 15966, 23670, 26610, 39915, 79830, 233281, 466562, 699843, 1166405, 1399686, 2099529, 2332810, 3499215, 4199058, 6998430, 10497645, 20995290]

約数ペア:

[(1, 20995290), (2, 10497645), (3, 6998430), (5, 4199058), (6, 3499215), (9, 2332810), (10, 2099529), (15, 1399686), (18, 1166405), (30, 699843), (45, 466562), (90, 233281), (263, 79830), (526, 39915), (789, 26610), (887, 23670), (1315, 15966), (1578, 13305), (1774, 11835), (2367, 8870), (2630, 7983), (2661, 7890), (3945, 5322), (4435, 4734)]