81753660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6397}}^1$

素因数の和:6483

約数の個数: 72

約数和(自身を含む): 251518176

約数和(自身を除く): 169764516

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 852, 1065, 1278, 1420, 2130, 2556, 3195, 4260, 6390, 6397, 12780, 12794, 19191, 25588, 31985, 38382, 57573, 63970, 76764, 95955, 115146, 127940, 191910, 230292, 287865, 383820, 454187, 575730, 908374, 1151460, 1362561, 1816748, 2270935, 2725122, 4087683, 4541870, 5450244, 6812805, 8175366, 9083740, 13625610, 16350732, 20438415, 27251220, 40876830, 81753660]

約数ペア:

[(1, 81753660), (2, 40876830), (3, 27251220), (4, 20438415), (5, 16350732), (6, 13625610), (9, 9083740), (10, 8175366), (12, 6812805), (15, 5450244), (18, 4541870), (20, 4087683), (30, 2725122), (36, 2270935), (45, 1816748), (60, 1362561), (71, 1151460), (90, 908374), (142, 575730), (180, 454187), (213, 383820), (284, 287865), (355, 230292), (426, 191910), (639, 127940), (710, 115146), (852, 95955), (1065, 76764), (1278, 63970), (1420, 57573), (2130, 38382), (2556, 31985), (3195, 25588), (4260, 19191), (6390, 12794), (6397, 12780)]