21293025

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{21839}}^1$

素因数の和:21865

約数の個数: 24

約数和(自身を含む): 37914240

約数和(自身を除く): 16621215

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975, 21839, 65517, 109195, 283907, 327585, 545975, 851721, 1419535, 1637925, 4258605, 7097675, 21293025]

約数ペア:

[(1, 21293025), (3, 7097675), (5, 4258605), (13, 1637925), (15, 1419535), (25, 851721), (39, 545975), (65, 327585), (75, 283907), (195, 109195), (325, 65517), (975, 21839)]