20407635

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{9649}}^1$

素因数の和:9707

約数の個数: 24

約数和(自身を含む): 36129600

約数和(自身を除く): 15721965

約数列:

[1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115, 9649, 28947, 48245, 86841, 144735, 434205, 453503, 1360509, 2267515, 4081527, 6802545, 20407635]

約数ペア:

[(1, 20407635), (3, 6802545), (5, 4081527), (9, 2267515), (15, 1360509), (45, 453503), (47, 434205), (141, 144735), (235, 86841), (423, 48245), (705, 28947), (2115, 9649)]