21720810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{5701}}^1$

素因数の和:5838

約数の個数: 32

約数和(自身を含む): 52549632

約数和(自身を除く): 30828822

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 127, 254, 381, 635, 762, 1270, 1905, 3810, 5701, 11402, 17103, 28505, 34206, 57010, 85515, 171030, 724027, 1448054, 2172081, 3620135, 4344162, 7240270, 10860405, 21720810]

約数ペア:

[(1, 21720810), (2, 10860405), (3, 7240270), (5, 4344162), (6, 3620135), (10, 2172081), (15, 1448054), (30, 724027), (127, 171030), (254, 85515), (381, 57010), (635, 34206), (762, 28505), (1270, 17103), (1905, 11402), (3810, 5701)]