21456375

素因数分解:

$3^1\times 5^3\times {\mathrm{29}}^1\times {\mathrm{1973}}^1$

素因数の和:2020

約数の個数: 32

約数和(自身を含む): 36953280

約数和(自身を除く): 15496905

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 125, 145, 375, 435, 725, 1973, 2175, 3625, 5919, 9865, 10875, 29595, 49325, 57217, 147975, 171651, 246625, 286085, 739875, 858255, 1430425, 4291275, 7152125, 21456375]

約数ペア:

[(1, 21456375), (3, 7152125), (5, 4291275), (15, 1430425), (25, 858255), (29, 739875), (75, 286085), (87, 246625), (125, 171651), (145, 147975), (375, 57217), (435, 49325), (725, 29595), (1973, 10875), (2175, 9865), (3625, 5919)]