20698965

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{2857}}^1$

素因数の和:2898

約数の個数: 48

約数和(自身を含む): 42801408

約数和(自身を除く): 22102443

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 35, 45, 63, 69, 105, 115, 161, 207, 315, 345, 483, 805, 1035, 1449, 2415, 2857, 7245, 8571, 14285, 19999, 25713, 42855, 59997, 65711, 99995, 128565, 179991, 197133, 299985, 328555, 459977, 591399, 899955, 985665, 1379931, 2299885, 2956995, 4139793, 6899655, 20698965]

約数ペア:

[(1, 20698965), (3, 6899655), (5, 4139793), (7, 2956995), (9, 2299885), (15, 1379931), (21, 985665), (23, 899955), (35, 591399), (45, 459977), (63, 328555), (69, 299985), (105, 197133), (115, 179991), (161, 128565), (207, 99995), (315, 65711), (345, 59997), (483, 42855), (805, 25713), (1035, 19999), (1449, 14285), (2415, 8571), (2857, 7245)]