21580494830

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{24247747}}^1$

素因数の和:24247843

約数の個数: 16

約数和(自身を含む): 39281351760

約数和(自身を除く): 17700856930

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 24247747, 48495494, 121238735, 242477470, 2158049483, 4316098966, 10790247415, 21580494830]

約数ペア:

[(1, 21580494830), (2, 10790247415), (5, 4316098966), (10, 2158049483), (89, 242477470), (178, 121238735), (445, 48495494), (890, 24247747)]