19786641

素因数分解:

$3^1\times 7^4\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:139

約数の個数: 40

約数和(自身を含む): 31998624

約数和(自身を除く): 12211983

約数列:

[1, 3, 7, 21, 41, 49, 67, 123, 147, 201, 287, 343, 469, 861, 1029, 1407, 2009, 2401, 2747, 3283, 6027, 7203, 8241, 9849, 14063, 19229, 22981, 42189, 57687, 68943, 98441, 134603, 160867, 295323, 403809, 482601, 942221, 2826663, 6595547, 19786641]

約数ペア:

[(1, 19786641), (3, 6595547), (7, 2826663), (21, 942221), (41, 482601), (49, 403809), (67, 295323), (123, 160867), (147, 134603), (201, 98441), (287, 68943), (343, 57687), (469, 42189), (861, 22981), (1029, 19229), (1407, 14063), (2009, 9849), (2401, 8241), (2747, 7203), (3283, 6027)]