21357015

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{1373}}^1$

素因数の和:1459

約数の個数: 32

約数和(自身を含む): 36801216

約数和(自身を除く): 15444201

約数列:

[1, 3, 5, 15, 17, 51, 61, 85, 183, 255, 305, 915, 1037, 1373, 3111, 4119, 5185, 6865, 15555, 20595, 23341, 70023, 83753, 116705, 251259, 350115, 418765, 1256295, 1423801, 4271403, 7119005, 21357015]

約数ペア:

[(1, 21357015), (3, 7119005), (5, 4271403), (15, 1423801), (17, 1256295), (51, 418765), (61, 350115), (85, 251259), (183, 116705), (255, 83753), (305, 70023), (915, 23341), (1037, 20595), (1373, 15555), (3111, 6865), (4119, 5185)]