19413905

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{617}}^1$

素因数の和:689

約数の個数: 32

約数和(自身を含む): 28477440

約数和(自身を除く): 9063535

約数列:

[1, 5, 7, 29, 31, 35, 145, 155, 203, 217, 617, 899, 1015, 1085, 3085, 4319, 4495, 6293, 17893, 19127, 21595, 31465, 89465, 95635, 125251, 133889, 554683, 626255, 669445, 2773415, 3882781, 19413905]

約数ペア:

[(1, 19413905), (5, 3882781), (7, 2773415), (29, 669445), (31, 626255), (35, 554683), (145, 133889), (155, 125251), (203, 95635), (217, 89465), (617, 31465), (899, 21595), (1015, 19127), (1085, 17893), (3085, 6293), (4319, 4495)]