20739120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{86413}}^1$

素因数の和:86429

約数の個数: 40

約数和(自身を含む): 64292016

約数和(自身を除く): 43552896

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 86413, 172826, 259239, 345652, 432065, 518478, 691304, 864130, 1036956, 1296195, 1382608, 1728260, 2073912, 2592390, 3456520, 4147824, 5184780, 6913040, 10369560, 20739120]

約数ペア:

[(1, 20739120), (2, 10369560), (3, 6913040), (4, 5184780), (5, 4147824), (6, 3456520), (8, 2592390), (10, 2073912), (12, 1728260), (15, 1382608), (16, 1296195), (20, 1036956), (24, 864130), (30, 691304), (40, 518478), (48, 432065), (60, 345652), (80, 259239), (120, 172826), (240, 86413)]