21785220

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{40343}}^1$

素因数の和:40361

約数の個数: 48

約数和(自身を含む): 67777920

約数和(自身を除く): 45992700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 40343, 80686, 121029, 161372, 201715, 242058, 363087, 403430, 484116, 605145, 726174, 806860, 1089261, 1210290, 1452348, 1815435, 2178522, 2420580, 3630870, 4357044, 5446305, 7261740, 10892610, 21785220]

約数ペア:

[(1, 21785220), (2, 10892610), (3, 7261740), (4, 5446305), (5, 4357044), (6, 3630870), (9, 2420580), (10, 2178522), (12, 1815435), (15, 1452348), (18, 1210290), (20, 1089261), (27, 806860), (30, 726174), (36, 605145), (45, 484116), (54, 403430), (60, 363087), (90, 242058), (108, 201715), (135, 161372), (180, 121029), (270, 80686), (540, 40343)]