20351655

素因数分解:

$3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1621}}^1$

素因数の和:1669

約数の個数: 40

約数和(自身を含む): 37682304

約数和(自身を除く): 17330649

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 81, 93, 135, 155, 279, 405, 465, 837, 1395, 1621, 2511, 4185, 4863, 8105, 12555, 14589, 24315, 43767, 50251, 72945, 131301, 150753, 218835, 251255, 452259, 656505, 753765, 1356777, 2261295, 4070331, 6783885, 20351655]

約数ペア:

[(1, 20351655), (3, 6783885), (5, 4070331), (9, 2261295), (15, 1356777), (27, 753765), (31, 656505), (45, 452259), (81, 251255), (93, 218835), (135, 150753), (155, 131301), (279, 72945), (405, 50251), (465, 43767), (837, 24315), (1395, 14589), (1621, 12555), (2511, 8105), (4185, 4863)]