21269480

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{379}}^1$

素因数の和:474

約数の個数: 64

約数和(自身を含む): 50889600

約数和(自身を除く): 29620120

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 61, 92, 115, 122, 184, 230, 244, 305, 379, 460, 488, 610, 758, 920, 1220, 1403, 1516, 1895, 2440, 2806, 3032, 3790, 5612, 7015, 7580, 8717, 11224, 14030, 15160, 17434, 23119, 28060, 34868, 43585, 46238, 56120, 69736, 87170, 92476, 115595, 174340, 184952, 231190, 348680, 462380, 531737, 924760, 1063474, 2126948, 2658685, 4253896, 5317370, 10634740, 21269480]

約数ペア:

[(1, 21269480), (2, 10634740), (4, 5317370), (5, 4253896), (8, 2658685), (10, 2126948), (20, 1063474), (23, 924760), (40, 531737), (46, 462380), (61, 348680), (92, 231190), (115, 184952), (122, 174340), (184, 115595), (230, 92476), (244, 87170), (305, 69736), (379, 56120), (460, 46238), (488, 43585), (610, 34868), (758, 28060), (920, 23119), (1220, 17434), (1403, 15160), (1516, 14030), (1895, 11224), (2440, 8717), (2806, 7580), (3032, 7015), (3790, 5612)]