155280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{647}}^1$

素因数の和:663

約数の個数: 40

約数和(自身を含む): 482112

約数和(自身を除く): 326832

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 647, 1294, 1941, 2588, 3235, 3882, 5176, 6470, 7764, 9705, 10352, 12940, 15528, 19410, 25880, 31056, 38820, 51760, 77640, 155280]

約数ペア:

[(1, 155280), (2, 77640), (3, 51760), (4, 38820), (5, 31056), (6, 25880), (8, 19410), (10, 15528), (12, 12940), (15, 10352), (16, 9705), (20, 7764), (24, 6470), (30, 5176), (40, 3882), (48, 3235), (60, 2588), (80, 1941), (120, 1294), (240, 647)]