20986810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{7019}}^1$

素因数の和:7062

約数の個数: 32

約数和(自身を含む): 42456960

約数和(自身を除く): 21470150

約数列:

[1, 2, 5, 10, 13, 23, 26, 46, 65, 115, 130, 230, 299, 598, 1495, 2990, 7019, 14038, 35095, 70190, 91247, 161437, 182494, 322874, 456235, 807185, 912470, 1614370, 2098681, 4197362, 10493405, 20986810]

約数ペア:

[(1, 20986810), (2, 10493405), (5, 4197362), (10, 2098681), (13, 1614370), (23, 912470), (26, 807185), (46, 456235), (65, 322874), (115, 182494), (130, 161437), (230, 91247), (299, 70190), (598, 35095), (1495, 14038), (2990, 7019)]