20213375

素因数分解:

$5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1777}}^1$

素因数の和:1812

約数の個数: 32

約数和(自身を含む): 31065216

約数和(自身を除く): 10851841

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 125, 175, 325, 455, 875, 1625, 1777, 2275, 8885, 11375, 12439, 23101, 44425, 62195, 115505, 161707, 222125, 310975, 577525, 808535, 1554875, 2887625, 4042675, 20213375]

約数ペア:

[(1, 20213375), (5, 4042675), (7, 2887625), (13, 1554875), (25, 808535), (35, 577525), (65, 310975), (91, 222125), (125, 161707), (175, 115505), (325, 62195), (455, 44425), (875, 23101), (1625, 12439), (1777, 11375), (2275, 8885)]