81950220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41389}}^1$

素因数の和:41415

約数の個数: 72

約数和(自身を含む): 271187280

約数和(自身を除く): 189237060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 41389, 82778, 124167, 165556, 206945, 248334, 372501, 413890, 455279, 496668, 620835, 745002, 827780, 910558, 1241670, 1365837, 1490004, 1821116, 1862505, 2276395, 2483340, 2731674, 3725010, 4097511, 4552790, 5463348, 6829185, 7450020, 8195022, 9105580, 13658370, 16390044, 20487555, 27316740, 40975110, 81950220]

約数ペア:

[(1, 81950220), (2, 40975110), (3, 27316740), (4, 20487555), (5, 16390044), (6, 13658370), (9, 9105580), (10, 8195022), (11, 7450020), (12, 6829185), (15, 5463348), (18, 4552790), (20, 4097511), (22, 3725010), (30, 2731674), (33, 2483340), (36, 2276395), (44, 1862505), (45, 1821116), (55, 1490004), (60, 1365837), (66, 1241670), (90, 910558), (99, 827780), (110, 745002), (132, 620835), (165, 496668), (180, 455279), (198, 413890), (220, 372501), (330, 248334), (396, 206945), (495, 165556), (660, 124167), (990, 82778), (1980, 41389)]