21505330

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{2539}}^1$

素因数の和:2575

約数の個数: 48

約数和(自身を含む): 48646080

約数和(自身を除く): 27140750

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 121, 154, 242, 385, 605, 770, 847, 1210, 1694, 2539, 4235, 5078, 8470, 12695, 17773, 25390, 27929, 35546, 55858, 88865, 139645, 177730, 195503, 279290, 307219, 391006, 614438, 977515, 1536095, 1955030, 2150533, 3072190, 4301066, 10752665, 21505330]

約数ペア:

[(1, 21505330), (2, 10752665), (5, 4301066), (7, 3072190), (10, 2150533), (11, 1955030), (14, 1536095), (22, 977515), (35, 614438), (55, 391006), (70, 307219), (77, 279290), (110, 195503), (121, 177730), (154, 139645), (242, 88865), (385, 55858), (605, 35546), (770, 27929), (847, 25390), (1210, 17773), (1694, 12695), (2539, 8470), (4235, 5078)]