21755280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{90647}}^1$

素因数の和:90663

約数の個数: 40

約数和(自身を含む): 67442112

約数和(自身を除く): 45686832

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 90647, 181294, 271941, 362588, 453235, 543882, 725176, 906470, 1087764, 1359705, 1450352, 1812940, 2175528, 2719410, 3625880, 4351056, 5438820, 7251760, 10877640, 21755280]

約数ペア:

[(1, 21755280), (2, 10877640), (3, 7251760), (4, 5438820), (5, 4351056), (6, 3625880), (8, 2719410), (10, 2175528), (12, 1812940), (15, 1450352), (16, 1359705), (20, 1087764), (24, 906470), (30, 725176), (40, 543882), (48, 453235), (60, 362588), (80, 271941), (120, 181294), (240, 90647)]