21249270

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{11243}}^1$

素因数の和:11266

約数の個数: 64

約数和(自身を含む): 64765440

約数和(自身を除く): 43516170

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 90, 105, 126, 135, 189, 210, 270, 315, 378, 630, 945, 1890, 11243, 22486, 33729, 56215, 67458, 78701, 101187, 112430, 157402, 168645, 202374, 236103, 303561, 337290, 393505, 472206, 505935, 607122, 708309, 787010, 1011870, 1180515, 1416618, 1517805, 2124927, 2361030, 3035610, 3541545, 4249854, 7083090, 10624635, 21249270]

約数ペア:

[(1, 21249270), (2, 10624635), (3, 7083090), (5, 4249854), (6, 3541545), (7, 3035610), (9, 2361030), (10, 2124927), (14, 1517805), (15, 1416618), (18, 1180515), (21, 1011870), (27, 787010), (30, 708309), (35, 607122), (42, 505935), (45, 472206), (54, 393505), (63, 337290), (70, 303561), (90, 236103), (105, 202374), (126, 168645), (135, 157402), (189, 112430), (210, 101187), (270, 78701), (315, 67458), (378, 56215), (630, 33729), (945, 22486), (1890, 11243)]