21630915

素因数分解:

$3^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{983}}^1$

素因数の和:1160

約数の個数: 32

約数和(自身を含む): 38730240

約数和(自身を除く): 17099325

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 163, 489, 815, 983, 1467, 2445, 2949, 4401, 4915, 7335, 8847, 14745, 22005, 26541, 44235, 132705, 160229, 480687, 801145, 1442061, 2403435, 4326183, 7210305, 21630915]

約数ペア:

[(1, 21630915), (3, 7210305), (5, 4326183), (9, 2403435), (15, 1442061), (27, 801145), (45, 480687), (135, 160229), (163, 132705), (489, 44235), (815, 26541), (983, 22005), (1467, 14745), (2445, 8847), (2949, 7335), (4401, 4915)]