81020970640

素因数分解:

$2^4\times 5^1\times {\mathrm{1039}}^1\times {\mathrm{974747}}^1$

素因数の和:975799

約数の個数: 40

約数和(自身を含む): 188555253120

約数和(自身を除く): 107534282480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1039, 2078, 4156, 5195, 8312, 10390, 16624, 20780, 41560, 83120, 974747, 1949494, 3898988, 4873735, 7797976, 9747470, 15595952, 19494940, 38989880, 77979760, 1012762133, 2025524266, 4051048532, 5063810665, 8102097064, 10127621330, 16204194128, 20255242660, 40510485320, 81020970640]

約数ペア:

[(1, 81020970640), (2, 40510485320), (4, 20255242660), (5, 16204194128), (8, 10127621330), (10, 8102097064), (16, 5063810665), (20, 4051048532), (40, 2025524266), (80, 1012762133), (1039, 77979760), (2078, 38989880), (4156, 19494940), (5195, 15595952), (8312, 9747470), (10390, 7797976), (16624, 4873735), (20780, 3898988), (41560, 1949494), (83120, 974747)]