20813390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{6961}}^1$

素因数の和:7004

約数の個数: 32

約数和(自身を含む): 42106176

約数和(自身を除く): 21292786

約数列:

[1, 2, 5, 10, 13, 23, 26, 46, 65, 115, 130, 230, 299, 598, 1495, 2990, 6961, 13922, 34805, 69610, 90493, 160103, 180986, 320206, 452465, 800515, 904930, 1601030, 2081339, 4162678, 10406695, 20813390]

約数ペア:

[(1, 20813390), (2, 10406695), (5, 4162678), (10, 2081339), (13, 1601030), (23, 904930), (26, 800515), (46, 452465), (65, 320206), (115, 180986), (130, 160103), (230, 90493), (299, 69610), (598, 34805), (1495, 13922), (2990, 6961)]