12899240

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{829}}^1$

素因数の和:1229

約数の個数: 32

約数和(自身を含む): 29133000

約数和(自身を除く): 16233760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 829, 1556, 1658, 1945, 3112, 3316, 3890, 4145, 6632, 7780, 8290, 15560, 16580, 33160, 322481, 644962, 1289924, 1612405, 2579848, 3224810, 6449620, 12899240]

約数ペア:

[(1, 12899240), (2, 6449620), (4, 3224810), (5, 2579848), (8, 1612405), (10, 1289924), (20, 644962), (40, 322481), (389, 33160), (778, 16580), (829, 15560), (1556, 8290), (1658, 7780), (1945, 6632), (3112, 4145), (3316, 3890)]