40391390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{1979}}^1$

素因数の和:2156

約数の個数: 32

約数和(自身を含む): 78835680

約数和(自身を除く): 38444290

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 157, 314, 785, 1570, 1979, 2041, 3958, 4082, 9895, 10205, 19790, 20410, 25727, 51454, 128635, 257270, 310703, 621406, 1553515, 3107030, 4039139, 8078278, 20195695, 40391390]

約数ペア:

[(1, 40391390), (2, 20195695), (5, 8078278), (10, 4039139), (13, 3107030), (26, 1553515), (65, 621406), (130, 310703), (157, 257270), (314, 128635), (785, 51454), (1570, 25727), (1979, 20410), (2041, 19790), (3958, 10205), (4082, 9895)]