81566480

素因数分解:

$2^4\times 5^1\times {\mathrm{503}}^1\times {\mathrm{2027}}^1$

素因数の和:2543

約数の個数: 40

約数和(自身を含む): 190112832

約数和(自身を除く): 108546352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 503, 1006, 2012, 2027, 2515, 4024, 4054, 5030, 8048, 8108, 10060, 10135, 16216, 20120, 20270, 32432, 40240, 40540, 81080, 162160, 1019581, 2039162, 4078324, 5097905, 8156648, 10195810, 16313296, 20391620, 40783240, 81566480]

約数ペア:

[(1, 81566480), (2, 40783240), (4, 20391620), (5, 16313296), (8, 10195810), (10, 8156648), (16, 5097905), (20, 4078324), (40, 2039162), (80, 1019581), (503, 162160), (1006, 81080), (2012, 40540), (2027, 40240), (2515, 32432), (4024, 20270), (4054, 20120), (5030, 16216), (8048, 10135), (8108, 10060)]