20390778

素因数分解:

$2^1\times 3^4\times {\mathrm{191}}^1\times {\mathrm{659}}^1$

素因数の和:864

約数の個数: 40

約数和(自身を含む): 45999360

約数和(自身を除く): 25608582

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 191, 382, 573, 659, 1146, 1318, 1719, 1977, 3438, 3954, 5157, 5931, 10314, 11862, 15471, 17793, 30942, 35586, 53379, 106758, 125869, 251738, 377607, 755214, 1132821, 2265642, 3398463, 6796926, 10195389, 20390778]

約数ペア:

[(1, 20390778), (2, 10195389), (3, 6796926), (6, 3398463), (9, 2265642), (18, 1132821), (27, 755214), (54, 377607), (81, 251738), (162, 125869), (191, 106758), (382, 53379), (573, 35586), (659, 30942), (1146, 17793), (1318, 15471), (1719, 11862), (1977, 10314), (3438, 5931), (3954, 5157)]