21428290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{863}}^1$

素因数の和:1074

約数の個数: 32

約数和(自身を含む): 41803776

約数和(自身を除く): 20375486

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 191, 382, 863, 955, 1726, 1910, 2483, 4315, 4966, 8630, 11219, 12415, 22438, 24830, 56095, 112190, 164833, 329666, 824165, 1648330, 2142829, 4285658, 10714145, 21428290]

約数ペア:

[(1, 21428290), (2, 10714145), (5, 4285658), (10, 2142829), (13, 1648330), (26, 824165), (65, 329666), (130, 164833), (191, 112190), (382, 56095), (863, 24830), (955, 22438), (1726, 12415), (1910, 11219), (2483, 8630), (4315, 4966)]