21148515

素因数分解:

$3^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4159}}^1$

素因数の和:4283

約数の個数: 24

約数和(自身を含む): 36990720

約数和(自身を除く): 15842205

約数列:

[1, 3, 5, 9, 15, 45, 113, 339, 565, 1017, 1695, 4159, 5085, 12477, 20795, 37431, 62385, 187155, 469967, 1409901, 2349835, 4229703, 7049505, 21148515]

約数ペア:

[(1, 21148515), (3, 7049505), (5, 4229703), (9, 2349835), (15, 1409901), (45, 469967), (113, 187155), (339, 62385), (565, 37431), (1017, 20795), (1695, 12477), (4159, 5085)]