21708740

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{14869}}^1$

素因数の和:14951

約数の個数: 24

約数和(自身を含む): 46215960

約数和(自身を除く): 24507220

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 14869, 29738, 59476, 74345, 148690, 297380, 1085437, 2170874, 4341748, 5427185, 10854370, 21708740]

約数ペア:

[(1, 21708740), (2, 10854370), (4, 5427185), (5, 4341748), (10, 2170874), (20, 1085437), (73, 297380), (146, 148690), (292, 74345), (365, 59476), (730, 29738), (1460, 14869)]