18721275

素因数分解:

$3^1\times 5^2\times {\mathrm{47}}^2\times {\mathrm{113}}^1$

素因数の和:220

約数の個数: 36

約数和(自身を含む): 31904952

約数和(自身を除く): 13183677

約数列:

[1, 3, 5, 15, 25, 47, 75, 113, 141, 235, 339, 565, 705, 1175, 1695, 2209, 2825, 3525, 5311, 6627, 8475, 11045, 15933, 26555, 33135, 55225, 79665, 132775, 165675, 249617, 398325, 748851, 1248085, 3744255, 6240425, 18721275]

約数ペア:

[(1, 18721275), (3, 6240425), (5, 3744255), (15, 1248085), (25, 748851), (47, 398325), (75, 249617), (113, 165675), (141, 132775), (235, 79665), (339, 55225), (565, 33135), (705, 26555), (1175, 15933), (1695, 11045), (2209, 8475), (2825, 6627), (3525, 5311)]