220443640

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{77621}}^1$

素因数の和:77703

約数の個数: 32

約数和(自身を含む): 502990560

約数和(自身を除く): 282546920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 77621, 155242, 310484, 388105, 620968, 776210, 1552420, 3104840, 5511091, 11022182, 22044364, 27555455, 44088728, 55110910, 110221820, 220443640]

約数ペア:

[(1, 220443640), (2, 110221820), (4, 55110910), (5, 44088728), (8, 27555455), (10, 22044364), (20, 11022182), (40, 5511091), (71, 3104840), (142, 1552420), (284, 776210), (355, 620968), (568, 388105), (710, 310484), (1420, 155242), (2840, 77621)]