21785790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{4297}}^1$

素因数の和:4333

約数の個数: 48

約数和(自身を含む): 56630448

約数和(自身を除く): 34844658

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 169, 195, 338, 390, 507, 845, 1014, 1690, 2535, 4297, 5070, 8594, 12891, 21485, 25782, 42970, 55861, 64455, 111722, 128910, 167583, 279305, 335166, 558610, 726193, 837915, 1452386, 1675830, 2178579, 3630965, 4357158, 7261930, 10892895, 21785790]

約数ペア:

[(1, 21785790), (2, 10892895), (3, 7261930), (5, 4357158), (6, 3630965), (10, 2178579), (13, 1675830), (15, 1452386), (26, 837915), (30, 726193), (39, 558610), (65, 335166), (78, 279305), (130, 167583), (169, 128910), (195, 111722), (338, 64455), (390, 55861), (507, 42970), (845, 25782), (1014, 21485), (1690, 12891), (2535, 8594), (4297, 5070)]