19747245

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{401}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 37395648

約数和(自身を除く): 17648403

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 67, 105, 147, 201, 245, 335, 401, 469, 735, 1005, 1203, 1407, 2005, 2345, 2807, 3283, 6015, 7035, 8421, 9849, 14035, 16415, 19649, 26867, 42105, 49245, 58947, 80601, 98245, 134335, 188069, 294735, 403005, 564207, 940345, 1316483, 2821035, 3949449, 6582415, 19747245]

約数ペア:

[(1, 19747245), (3, 6582415), (5, 3949449), (7, 2821035), (15, 1316483), (21, 940345), (35, 564207), (49, 403005), (67, 294735), (105, 188069), (147, 134335), (201, 98245), (245, 80601), (335, 58947), (401, 49245), (469, 42105), (735, 26867), (1005, 19649), (1203, 16415), (1407, 14035), (2005, 9849), (2345, 8421), (2807, 7035), (3283, 6015)]