20802717

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:179

約数の個数: 48

約数和(自身を含む): 34433280

約数和(自身を除く): 13630563

約数列:

[1, 3, 9, 13, 27, 39, 47, 97, 117, 141, 169, 291, 351, 423, 507, 611, 873, 1261, 1269, 1521, 1833, 2619, 3783, 4559, 4563, 5499, 7943, 11349, 13677, 16393, 16497, 23829, 34047, 41031, 49179, 59267, 71487, 123093, 147537, 177801, 214461, 442611, 533403, 770471, 1600209, 2311413, 6934239, 20802717]

約数ペア:

[(1, 20802717), (3, 6934239), (9, 2311413), (13, 1600209), (27, 770471), (39, 533403), (47, 442611), (97, 214461), (117, 177801), (141, 147537), (169, 123093), (291, 71487), (351, 59267), (423, 49179), (507, 41031), (611, 34047), (873, 23829), (1261, 16497), (1269, 16393), (1521, 13677), (1833, 11349), (2619, 7943), (3783, 5499), (4559, 4563)]