80654620

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{11171}}^1$

素因数の和:11218

約数の個数: 36

約数和(自身を含む): 178774344

約数和(自身を除く): 98119724

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 3610, 7220, 11171, 22342, 44684, 55855, 111710, 212249, 223420, 424498, 848996, 1061245, 2122490, 4032731, 4244980, 8065462, 16130924, 20163655, 40327310, 80654620]

約数ペア:

[(1, 80654620), (2, 40327310), (4, 20163655), (5, 16130924), (10, 8065462), (19, 4244980), (20, 4032731), (38, 2122490), (76, 1061245), (95, 848996), (190, 424498), (361, 223420), (380, 212249), (722, 111710), (1444, 55855), (1805, 44684), (3610, 22342), (7220, 11171)]