21065220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10639}}^1$

素因数の和:10665

約数の個数: 72

約数和(自身を含む): 69713280

約数和(自身を除く): 48648060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 10639, 21278, 31917, 42556, 53195, 63834, 95751, 106390, 117029, 127668, 159585, 191502, 212780, 234058, 319170, 351087, 383004, 468116, 478755, 585145, 638340, 702174, 957510, 1053261, 1170290, 1404348, 1755435, 1915020, 2106522, 2340580, 3510870, 4213044, 5266305, 7021740, 10532610, 21065220]

約数ペア:

[(1, 21065220), (2, 10532610), (3, 7021740), (4, 5266305), (5, 4213044), (6, 3510870), (9, 2340580), (10, 2106522), (11, 1915020), (12, 1755435), (15, 1404348), (18, 1170290), (20, 1053261), (22, 957510), (30, 702174), (33, 638340), (36, 585145), (44, 478755), (45, 468116), (55, 383004), (60, 351087), (66, 319170), (90, 234058), (99, 212780), (110, 191502), (132, 159585), (165, 127668), (180, 117029), (198, 106390), (220, 95751), (330, 63834), (396, 53195), (495, 42556), (660, 31917), (990, 21278), (1980, 10639)]