20868015

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{8641}}^1$

素因数の和:8679

約数の個数: 32

約数和(自身を含む): 39822336

約数和(自身を除く): 18954321

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 69, 105, 115, 161, 345, 483, 805, 2415, 8641, 25923, 43205, 60487, 129615, 181461, 198743, 302435, 596229, 907305, 993715, 1391201, 2981145, 4173603, 6956005, 20868015]

約数ペア:

[(1, 20868015), (3, 6956005), (5, 4173603), (7, 2981145), (15, 1391201), (21, 993715), (23, 907305), (35, 596229), (69, 302435), (105, 198743), (115, 181461), (161, 129615), (345, 60487), (483, 43205), (805, 25923), (2415, 8641)]