81121390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{31321}}^1$

素因数の和:31372

約数の個数: 32

約数和(自身を含む): 171393984

約数和(自身を除く): 90272594

約数列:

[1, 2, 5, 7, 10, 14, 35, 37, 70, 74, 185, 259, 370, 518, 1295, 2590, 31321, 62642, 156605, 219247, 313210, 438494, 1096235, 1158877, 2192470, 2317754, 5794385, 8112139, 11588770, 16224278, 40560695, 81121390]

約数ペア:

[(1, 81121390), (2, 40560695), (5, 16224278), (7, 11588770), (10, 8112139), (14, 5794385), (35, 2317754), (37, 2192470), (70, 1158877), (74, 1096235), (185, 438494), (259, 313210), (370, 219247), (518, 156605), (1295, 62642), (2590, 31321)]