201678320

素因数分解:

$2^4\times 5^1\times {\mathrm{2520979}}^1$

素因数の和:2520992

約数の個数: 20

約数和(自身を含む): 468902280

約数和(自身を除く): 267223960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2520979, 5041958, 10083916, 12604895, 20167832, 25209790, 40335664, 50419580, 100839160, 201678320]

約数ペア:

[(1, 201678320), (2, 100839160), (4, 50419580), (5, 40335664), (8, 25209790), (10, 20167832), (16, 12604895), (20, 10083916), (40, 5041958), (80, 2520979)]