1638040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1321}}^1$

素因数の和:1363

約数の個数: 32

約数和(自身を含む): 3807360

約数和(自身を除く): 2169320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 1321, 2642, 5284, 6605, 10568, 13210, 26420, 40951, 52840, 81902, 163804, 204755, 327608, 409510, 819020, 1638040]

約数ペア:

[(1, 1638040), (2, 819020), (4, 409510), (5, 327608), (8, 204755), (10, 163804), (20, 81902), (31, 52840), (40, 40951), (62, 26420), (124, 13210), (155, 10568), (248, 6605), (310, 5284), (620, 2642), (1240, 1321)]