20919978

素因数分解:

$2^1\times 3^3\times {\mathrm{31}}^1\times {\mathrm{12497}}^1$

素因数の和:12539

約数の個数: 32

約数和(自身を含む): 47992320

約数和(自身を除く): 27072342

約数列:

[1, 2, 3, 6, 9, 18, 27, 31, 54, 62, 93, 186, 279, 558, 837, 1674, 12497, 24994, 37491, 74982, 112473, 224946, 337419, 387407, 674838, 774814, 1162221, 2324442, 3486663, 6973326, 10459989, 20919978]

約数ペア:

[(1, 20919978), (2, 10459989), (3, 6973326), (6, 3486663), (9, 2324442), (18, 1162221), (27, 774814), (31, 674838), (54, 387407), (62, 337419), (93, 224946), (186, 112473), (279, 74982), (558, 37491), (837, 24994), (1674, 12497)]