20598875

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1$

素因数の和:308

約数の個数: 32

約数和(自身を含む): 28574208

約数和(自身を除く): 7975333

約数列:

[1, 5, 11, 25, 55, 71, 125, 211, 275, 355, 781, 1055, 1375, 1775, 2321, 3905, 5275, 8875, 11605, 14981, 19525, 26375, 58025, 74905, 97625, 164791, 290125, 374525, 823955, 1872625, 4119775, 20598875]

約数ペア:

[(1, 20598875), (5, 4119775), (11, 1872625), (25, 823955), (55, 374525), (71, 290125), (125, 164791), (211, 97625), (275, 74905), (355, 58025), (781, 26375), (1055, 19525), (1375, 14981), (1775, 11605), (2321, 8875), (3905, 5275)]