16818865

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1229}}^1$

素因数の和:1281

約数の個数: 32

約数和(自身を含む): 25505280

約数和(自身を除く): 8686415

約数列:

[1, 5, 7, 17, 23, 35, 85, 115, 119, 161, 391, 595, 805, 1229, 1955, 2737, 6145, 8603, 13685, 20893, 28267, 43015, 104465, 141335, 146251, 197869, 480539, 731255, 989345, 2402695, 3363773, 16818865]

約数ペア:

[(1, 16818865), (5, 3363773), (7, 2402695), (17, 989345), (23, 731255), (35, 480539), (85, 197869), (115, 146251), (119, 141335), (161, 104465), (391, 43015), (595, 28267), (805, 20893), (1229, 13685), (1955, 8603), (2737, 6145)]