21973815

素因数分解:

$3^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1171}}^1$

素因数の和:1324

約数の個数: 32

約数和(自身を含む): 39379200

約数和(自身を除く): 17405385

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 139, 417, 695, 1171, 1251, 2085, 3513, 3753, 5855, 6255, 10539, 17565, 18765, 31617, 52695, 158085, 162769, 488307, 813845, 1464921, 2441535, 4394763, 7324605, 21973815]

約数ペア:

[(1, 21973815), (3, 7324605), (5, 4394763), (9, 2441535), (15, 1464921), (27, 813845), (45, 488307), (135, 162769), (139, 158085), (417, 52695), (695, 31617), (1171, 18765), (1251, 17565), (2085, 10539), (3513, 6255), (3753, 5855)]