20953625

素因数分解:

$5^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{311}}^1$

素因数の和:351

約数の個数: 48

約数和(自身を含む): 33291648

約数和(自身を除く): 12338023

約数列:

[1, 5, 7, 11, 25, 35, 49, 55, 77, 125, 175, 245, 275, 311, 385, 539, 875, 1225, 1375, 1555, 1925, 2177, 2695, 3421, 6125, 7775, 9625, 10885, 13475, 15239, 17105, 23947, 38875, 54425, 67375, 76195, 85525, 119735, 167629, 272125, 380975, 427625, 598675, 838145, 1904875, 2993375, 4190725, 20953625]

約数ペア:

[(1, 20953625), (5, 4190725), (7, 2993375), (11, 1904875), (25, 838145), (35, 598675), (49, 427625), (55, 380975), (77, 272125), (125, 167629), (175, 119735), (245, 85525), (275, 76195), (311, 67375), (385, 54425), (539, 38875), (875, 23947), (1225, 17105), (1375, 15239), (1555, 13475), (1925, 10885), (2177, 9625), (2695, 7775), (3421, 6125)]