20747715

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1693}}^1$

素因数の和:1763

約数の個数: 32

約数和(自身を含む): 35777280

約数和(自身を除く): 15029565

約数列:

[1, 3, 5, 15, 19, 43, 57, 95, 129, 215, 285, 645, 817, 1693, 2451, 4085, 5079, 8465, 12255, 25395, 32167, 72799, 96501, 160835, 218397, 363995, 482505, 1091985, 1383181, 4149543, 6915905, 20747715]

約数ペア:

[(1, 20747715), (3, 6915905), (5, 4149543), (15, 1383181), (19, 1091985), (43, 482505), (57, 363995), (95, 218397), (129, 160835), (215, 96501), (285, 72799), (645, 32167), (817, 25395), (1693, 12255), (2451, 8465), (4085, 5079)]