81412520

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{73}}^1\times {\mathrm{569}}^1$

素因数の和:667

約数の個数: 96

約数和(自身を含む): 216383400

約数和(自身を除く): 134970880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 73, 98, 140, 146, 196, 245, 280, 292, 365, 392, 490, 511, 569, 584, 730, 980, 1022, 1138, 1460, 1960, 2044, 2276, 2555, 2845, 2920, 3577, 3983, 4088, 4552, 5110, 5690, 7154, 7966, 10220, 11380, 14308, 15932, 17885, 19915, 20440, 22760, 27881, 28616, 31864, 35770, 39830, 41537, 55762, 71540, 79660, 83074, 111524, 139405, 143080, 159320, 166148, 207685, 223048, 278810, 290759, 332296, 415370, 557620, 581518, 830740, 1115240, 1163036, 1453795, 1661480, 2035313, 2326072, 2907590, 4070626, 5815180, 8141252, 10176565, 11630360, 16282504, 20353130, 40706260, 81412520]

約数ペア:

[(1, 81412520), (2, 40706260), (4, 20353130), (5, 16282504), (7, 11630360), (8, 10176565), (10, 8141252), (14, 5815180), (20, 4070626), (28, 2907590), (35, 2326072), (40, 2035313), (49, 1661480), (56, 1453795), (70, 1163036), (73, 1115240), (98, 830740), (140, 581518), (146, 557620), (196, 415370), (245, 332296), (280, 290759), (292, 278810), (365, 223048), (392, 207685), (490, 166148), (511, 159320), (569, 143080), (584, 139405), (730, 111524), (980, 83074), (1022, 79660), (1138, 71540), (1460, 55762), (1960, 41537), (2044, 39830), (2276, 35770), (2555, 31864), (2845, 28616), (2920, 27881), (3577, 22760), (3983, 20440), (4088, 19915), (4552, 17885), (5110, 15932), (5690, 14308), (7154, 11380), (7966, 10220)]