20959906

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{421}}^1$

素因数の和:538

約数の個数: 32

約数和(自身を含む): 35974656

約数和(自身を除く): 15014750

約数列:

[1, 2, 11, 22, 31, 62, 73, 146, 341, 421, 682, 803, 842, 1606, 2263, 4526, 4631, 9262, 13051, 24893, 26102, 30733, 49786, 61466, 143561, 287122, 338063, 676126, 952723, 1905446, 10479953, 20959906]

約数ペア:

[(1, 20959906), (2, 10479953), (11, 1905446), (22, 952723), (31, 676126), (62, 338063), (73, 287122), (146, 143561), (341, 61466), (421, 49786), (682, 30733), (803, 26102), (842, 24893), (1606, 13051), (2263, 9262), (4526, 4631)]