13120821

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{12251}}^1$

素因数の和:12281

約数の個数: 24

約数和(自身を含む): 22935744

約数和(自身を除く): 9814923

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 12251, 36753, 85757, 110259, 208267, 257271, 624801, 771813, 1457869, 1874403, 4373607, 13120821]

約数ペア:

[(1, 13120821), (3, 4373607), (7, 1874403), (9, 1457869), (17, 771813), (21, 624801), (51, 257271), (63, 208267), (119, 110259), (153, 85757), (357, 36753), (1071, 12251)]