19939790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{941}}^1$

素因数の和:1124

約数の個数: 32

約数和(自身を含む): 38930976

約数和(自身を除く): 18991186

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 163, 326, 815, 941, 1630, 1882, 2119, 4238, 4705, 9410, 10595, 12233, 21190, 24466, 61165, 122330, 153383, 306766, 766915, 1533830, 1993979, 3987958, 9969895, 19939790]

約数ペア:

[(1, 19939790), (2, 9969895), (5, 3987958), (10, 1993979), (13, 1533830), (26, 766915), (65, 306766), (130, 153383), (163, 122330), (326, 61165), (815, 24466), (941, 21190), (1630, 12233), (1882, 10595), (2119, 9410), (4238, 4705)]