20218592875

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{683}}^1\times {\mathrm{18217}}^1$

素因数の和:18928

約数の個数: 32

約数和(自身を含む): 27215068608

約数和(自身を除く): 6996475733

約数列:

[1, 5, 13, 25, 65, 125, 325, 683, 1625, 3415, 8879, 17075, 18217, 44395, 85375, 91085, 221975, 236821, 455425, 1109875, 1184105, 2277125, 5920525, 12442211, 29602625, 62211055, 161748743, 311055275, 808743715, 1555276375, 4043718575, 20218592875]

約数ペア:

[(1, 20218592875), (5, 4043718575), (13, 1555276375), (25, 808743715), (65, 311055275), (125, 161748743), (325, 62211055), (683, 29602625), (1625, 12442211), (3415, 5920525), (8879, 2277125), (17075, 1184105), (18217, 1109875), (44395, 455425), (85375, 236821), (91085, 221975)]