81263650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{163}}^1$

素因数の和:260

約数の個数: 72

約数和(自身を含む): 167466960

約数和(自身を除く): 86203310

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 59, 65, 118, 130, 163, 169, 295, 325, 326, 338, 590, 650, 767, 815, 845, 1475, 1534, 1630, 1690, 2119, 2950, 3835, 4075, 4225, 4238, 7670, 8150, 8450, 9617, 9971, 10595, 19175, 19234, 19942, 21190, 27547, 38350, 48085, 49855, 52975, 55094, 96170, 99710, 105950, 125021, 137735, 240425, 249275, 250042, 275470, 480850, 498550, 625105, 688675, 1250210, 1377350, 1625273, 3125525, 3250546, 6251050, 8126365, 16252730, 40631825, 81263650]

約数ペア:

[(1, 81263650), (2, 40631825), (5, 16252730), (10, 8126365), (13, 6251050), (25, 3250546), (26, 3125525), (50, 1625273), (59, 1377350), (65, 1250210), (118, 688675), (130, 625105), (163, 498550), (169, 480850), (295, 275470), (325, 250042), (326, 249275), (338, 240425), (590, 137735), (650, 125021), (767, 105950), (815, 99710), (845, 96170), (1475, 55094), (1534, 52975), (1630, 49855), (1690, 48085), (2119, 38350), (2950, 27547), (3835, 21190), (4075, 19942), (4225, 19234), (4238, 19175), (7670, 10595), (8150, 9971), (8450, 9617)]