20317605

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{359}}^1$

素因数の和:399

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 21154395

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 49, 55, 77, 105, 147, 165, 231, 245, 343, 359, 385, 539, 735, 1029, 1077, 1155, 1617, 1715, 1795, 2513, 2695, 3773, 3949, 5145, 5385, 7539, 8085, 11319, 11847, 12565, 17591, 18865, 19745, 27643, 37695, 52773, 56595, 59235, 82929, 87955, 123137, 138215, 193501, 263865, 369411, 414645, 580503, 615685, 967505, 1354507, 1847055, 2902515, 4063521, 6772535, 20317605]

約数ペア:

[(1, 20317605), (3, 6772535), (5, 4063521), (7, 2902515), (11, 1847055), (15, 1354507), (21, 967505), (33, 615685), (35, 580503), (49, 414645), (55, 369411), (77, 263865), (105, 193501), (147, 138215), (165, 123137), (231, 87955), (245, 82929), (343, 59235), (359, 56595), (385, 52773), (539, 37695), (735, 27643), (1029, 19745), (1077, 18865), (1155, 17591), (1617, 12565), (1715, 11847), (1795, 11319), (2513, 8085), (2695, 7539), (3773, 5385), (3949, 5145)]