21000870

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2357}}^1$

素因数の和:2387

約数の個数: 80

約数和(自身を含む): 61628688

約数和(自身を除く): 40627818

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 27, 30, 33, 45, 54, 55, 66, 81, 90, 99, 110, 135, 162, 165, 198, 270, 297, 330, 405, 495, 594, 810, 891, 990, 1485, 1782, 2357, 2970, 4455, 4714, 7071, 8910, 11785, 14142, 21213, 23570, 25927, 35355, 42426, 51854, 63639, 70710, 77781, 106065, 127278, 129635, 155562, 190917, 212130, 233343, 259270, 318195, 381834, 388905, 466686, 636390, 700029, 777810, 954585, 1166715, 1400058, 1909170, 2100087, 2333430, 3500145, 4200174, 7000290, 10500435, 21000870]

約数ペア:

[(1, 21000870), (2, 10500435), (3, 7000290), (5, 4200174), (6, 3500145), (9, 2333430), (10, 2100087), (11, 1909170), (15, 1400058), (18, 1166715), (22, 954585), (27, 777810), (30, 700029), (33, 636390), (45, 466686), (54, 388905), (55, 381834), (66, 318195), (81, 259270), (90, 233343), (99, 212130), (110, 190917), (135, 155562), (162, 129635), (165, 127278), (198, 106065), (270, 77781), (297, 70710), (330, 63639), (405, 51854), (495, 42426), (594, 35355), (810, 25927), (891, 23570), (990, 21213), (1485, 14142), (1782, 11785), (2357, 8910), (2970, 7071), (4455, 4714)]