1991997194

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{78941}}^1$

素因数の和:79022

約数の個数: 32

約数和(自身を含む): 3455764992

約数和(自身を除く): 1463767798

約数列:

[1, 2, 11, 22, 31, 37, 62, 74, 341, 407, 682, 814, 1147, 2294, 12617, 25234, 78941, 157882, 868351, 1736702, 2447171, 2920817, 4894342, 5841634, 26918881, 32128987, 53837762, 64257974, 90545327, 181090654, 995998597, 1991997194]

約数ペア:

[(1, 1991997194), (2, 995998597), (11, 181090654), (22, 90545327), (31, 64257974), (37, 53837762), (62, 32128987), (74, 26918881), (341, 5841634), (407, 4894342), (682, 2920817), (814, 2447171), (1147, 1736702), (2294, 868351), (12617, 157882), (25234, 78941)]