20451125

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:222

約数の個数: 32

約数和(自身を含む): 27456000

約数和(自身を除く): 7004875

約数列:

[1, 5, 19, 25, 79, 95, 109, 125, 395, 475, 545, 1501, 1975, 2071, 2375, 2725, 7505, 8611, 9875, 10355, 13625, 37525, 43055, 51775, 163609, 187625, 215275, 258875, 818045, 1076375, 4090225, 20451125]

約数ペア:

[(1, 20451125), (5, 4090225), (19, 1076375), (25, 818045), (79, 258875), (95, 215275), (109, 187625), (125, 163609), (395, 51775), (475, 43055), (545, 37525), (1501, 13625), (1975, 10355), (2071, 9875), (2375, 8611), (2725, 7505)]