81668020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:281

約数の個数: 96

約数和(自身を含む): 203486976

約数和(自身を除く): 121818956

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 73, 122, 131, 140, 146, 244, 262, 292, 305, 365, 427, 511, 524, 610, 655, 730, 854, 917, 1022, 1220, 1310, 1460, 1708, 1834, 2044, 2135, 2555, 2620, 3668, 4270, 4453, 4585, 5110, 7991, 8540, 8906, 9170, 9563, 10220, 15982, 17812, 18340, 19126, 22265, 31171, 31964, 38252, 39955, 44530, 47815, 55937, 62342, 66941, 79910, 89060, 95630, 111874, 124684, 133882, 155855, 159820, 191260, 223748, 267764, 279685, 311710, 334705, 559370, 583343, 623420, 669410, 1118740, 1166686, 1338820, 2333372, 2916715, 4083401, 5833430, 8166802, 11666860, 16333604, 20417005, 40834010, 81668020]

約数ペア:

[(1, 81668020), (2, 40834010), (4, 20417005), (5, 16333604), (7, 11666860), (10, 8166802), (14, 5833430), (20, 4083401), (28, 2916715), (35, 2333372), (61, 1338820), (70, 1166686), (73, 1118740), (122, 669410), (131, 623420), (140, 583343), (146, 559370), (244, 334705), (262, 311710), (292, 279685), (305, 267764), (365, 223748), (427, 191260), (511, 159820), (524, 155855), (610, 133882), (655, 124684), (730, 111874), (854, 95630), (917, 89060), (1022, 79910), (1220, 66941), (1310, 62342), (1460, 55937), (1708, 47815), (1834, 44530), (2044, 39955), (2135, 38252), (2555, 31964), (2620, 31171), (3668, 22265), (4270, 19126), (4453, 18340), (4585, 17812), (5110, 15982), (7991, 10220), (8540, 9563), (8906, 9170)]