221710960

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{28571}}^1$

素因数の和:28681

約数の個数: 40

約数和(自身を含む): 520810416

約数和(自身を除く): 299099456

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 388, 485, 776, 970, 1552, 1940, 3880, 7760, 28571, 57142, 114284, 142855, 228568, 285710, 457136, 571420, 1142840, 2285680, 2771387, 5542774, 11085548, 13856935, 22171096, 27713870, 44342192, 55427740, 110855480, 221710960]

約数ペア:

[(1, 221710960), (2, 110855480), (4, 55427740), (5, 44342192), (8, 27713870), (10, 22171096), (16, 13856935), (20, 11085548), (40, 5542774), (80, 2771387), (97, 2285680), (194, 1142840), (388, 571420), (485, 457136), (776, 285710), (970, 228568), (1552, 142855), (1940, 114284), (3880, 57142), (7760, 28571)]