20486567660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{719}}^1\times {\mathrm{109589}}^1$

素因数の和:110330

約数の個数: 48

約数和(自身を含む): 46396022400

約数和(自身を除く): 25909454740

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 719, 1438, 2876, 3595, 7190, 9347, 14380, 18694, 37388, 46735, 93470, 109589, 186940, 219178, 438356, 547945, 1095890, 1424657, 2191780, 2849314, 5698628, 7123285, 14246570, 28493140, 78794491, 157588982, 315177964, 393972455, 787944910, 1024328383, 1575889820, 2048656766, 4097313532, 5121641915, 10243283830, 20486567660]

約数ペア:

[(1, 20486567660), (2, 10243283830), (4, 5121641915), (5, 4097313532), (10, 2048656766), (13, 1575889820), (20, 1024328383), (26, 787944910), (52, 393972455), (65, 315177964), (130, 157588982), (260, 78794491), (719, 28493140), (1438, 14246570), (2876, 7123285), (3595, 5698628), (7190, 2849314), (9347, 2191780), (14380, 1424657), (18694, 1095890), (37388, 547945), (46735, 438356), (93470, 219178), (109589, 186940)]