278039890

素因数分解:

$2^1\times 5^1\times {\mathrm{113}}^1\times {\mathrm{197}}^1\times {\mathrm{1249}}^1$

素因数の和:1566

約数の個数: 32

約数和(自身を含む): 507870000

約数和(自身を除く): 229830110

約数列:

[1, 2, 5, 10, 113, 197, 226, 394, 565, 985, 1130, 1249, 1970, 2498, 6245, 12490, 22261, 44522, 111305, 141137, 222610, 246053, 282274, 492106, 705685, 1230265, 1411370, 2460530, 27803989, 55607978, 139019945, 278039890]

約数ペア:

[(1, 278039890), (2, 139019945), (5, 55607978), (10, 27803989), (113, 2460530), (197, 1411370), (226, 1230265), (394, 705685), (565, 492106), (985, 282274), (1130, 246053), (1249, 222610), (1970, 141137), (2498, 111305), (6245, 44522), (12490, 22261)]