30686840

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{2917}}^1$

素因数の和:3191

約数の個数: 32

約数和(自身を含む): 69331680

約数和(自身を除く): 38644840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 2104, 2630, 2917, 5260, 5834, 10520, 11668, 14585, 23336, 29170, 58340, 116680, 767171, 1534342, 3068684, 3835855, 6137368, 7671710, 15343420, 30686840]

約数ペア:

[(1, 30686840), (2, 15343420), (4, 7671710), (5, 6137368), (8, 3835855), (10, 3068684), (20, 1534342), (40, 767171), (263, 116680), (526, 58340), (1052, 29170), (1315, 23336), (2104, 14585), (2630, 11668), (2917, 10520), (5260, 5834)]