21300875

素因数分解:

$5^3\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:308

約数の個数: 32

約数和(自身を含む): 28753920

約数和(自身を除く): 7453045

約数列:

[1, 5, 23, 25, 31, 115, 125, 155, 239, 575, 713, 775, 1195, 2875, 3565, 3875, 5497, 5975, 7409, 17825, 27485, 29875, 37045, 89125, 137425, 170407, 185225, 687125, 852035, 926125, 4260175, 21300875]

約数ペア:

[(1, 21300875), (5, 4260175), (23, 926125), (25, 852035), (31, 687125), (115, 185225), (125, 170407), (155, 137425), (239, 89125), (575, 37045), (713, 29875), (775, 27485), (1195, 17825), (2875, 7409), (3565, 5975), (3875, 5497)]