81528209

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{1009}}^1$

素因数の和:1137

約数の個数: 24

約数和(自身を含む): 101553480

約数和(自身を除く): 20025271

約数列:

[1, 7, 17, 49, 97, 119, 679, 833, 1009, 1649, 4753, 7063, 11543, 17153, 49441, 80801, 97873, 120071, 685111, 840497, 1663841, 4795777, 11646887, 81528209]

約数ペア:

[(1, 81528209), (7, 11646887), (17, 4795777), (49, 1663841), (97, 840497), (119, 685111), (679, 120071), (833, 97873), (1009, 80801), (1649, 49441), (4753, 17153), (7063, 11543)]