20807685

素因数分解:

$3^4\times 5^1\times {\mathrm{83}}^1\times {\mathrm{619}}^1$

素因数の和:719

約数の個数: 40

約数和(自身を含む): 37810080

約数和(自身を除く): 17002395

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 83, 135, 249, 405, 415, 619, 747, 1245, 1857, 2241, 3095, 3735, 5571, 6723, 9285, 11205, 16713, 27855, 33615, 50139, 51377, 83565, 154131, 250695, 256885, 462393, 770655, 1387179, 2311965, 4161537, 6935895, 20807685]

約数ペア:

[(1, 20807685), (3, 6935895), (5, 4161537), (9, 2311965), (15, 1387179), (27, 770655), (45, 462393), (81, 256885), (83, 250695), (135, 154131), (249, 83565), (405, 51377), (415, 50139), (619, 33615), (747, 27855), (1245, 16713), (1857, 11205), (2241, 9285), (3095, 6723), (3735, 5571)]