19723420

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{809}}^1$

素因数の和:894

約数の個数: 48

約数和(自身を含む): 44089920

約数和(自身を除く): 24366500

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 53, 92, 106, 115, 212, 230, 265, 460, 530, 809, 1060, 1219, 1618, 2438, 3236, 4045, 4876, 6095, 8090, 12190, 16180, 18607, 24380, 37214, 42877, 74428, 85754, 93035, 171508, 186070, 214385, 372140, 428770, 857540, 986171, 1972342, 3944684, 4930855, 9861710, 19723420]

約数ペア:

[(1, 19723420), (2, 9861710), (4, 4930855), (5, 3944684), (10, 1972342), (20, 986171), (23, 857540), (46, 428770), (53, 372140), (92, 214385), (106, 186070), (115, 171508), (212, 93035), (230, 85754), (265, 74428), (460, 42877), (530, 37214), (809, 24380), (1060, 18607), (1219, 16180), (1618, 12190), (2438, 8090), (3236, 6095), (4045, 4876)]