20884955

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{233}}^1$

素因数の和:455

約数の個数: 32

約数和(自身を含む): 31135104

約数和(自身を除く): 10250149

約数列:

[1, 5, 7, 13, 35, 65, 91, 197, 233, 455, 985, 1165, 1379, 1631, 2561, 3029, 6895, 8155, 12805, 15145, 17927, 21203, 45901, 89635, 106015, 229505, 321307, 596713, 1606535, 2983565, 4176991, 20884955]

約数ペア:

[(1, 20884955), (5, 4176991), (7, 2983565), (13, 1606535), (35, 596713), (65, 321307), (91, 229505), (197, 106015), (233, 89635), (455, 45901), (985, 21203), (1165, 17927), (1379, 15145), (1631, 12805), (2561, 8155), (3029, 6895)]