21645085

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{269}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 34473600

約数和(自身を除く): 12828515

約数列:

[1, 5, 7, 11, 19, 35, 55, 77, 95, 121, 133, 209, 269, 385, 605, 665, 847, 1045, 1345, 1463, 1883, 2299, 2959, 4235, 5111, 7315, 9415, 11495, 14795, 16093, 20713, 25555, 32549, 35777, 56221, 80465, 103565, 162745, 178885, 227843, 281105, 393547, 618431, 1139215, 1967735, 3092155, 4329017, 21645085]

約数ペア:

[(1, 21645085), (5, 4329017), (7, 3092155), (11, 1967735), (19, 1139215), (35, 618431), (55, 393547), (77, 281105), (95, 227843), (121, 178885), (133, 162745), (209, 103565), (269, 80465), (385, 56221), (605, 35777), (665, 32549), (847, 25555), (1045, 20713), (1345, 16093), (1463, 14795), (1883, 11495), (2299, 9415), (2959, 7315), (4235, 5111)]