28205460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2207}}^1$

素因数の和:2293

約数の個数: 72

約数和(自身を含む): 86800896

約数和(自身を除く): 58595436

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, 2207, 2556, 3195, 4260, 4414, 6390, 6621, 8828, 11035, 12780, 13242, 19863, 22070, 26484, 33105, 39726, 44140, 66210, 79452, 99315, 132420, 156697, 198630, 313394, 397260, 470091, 626788, 783485, 940182, 1410273, 1566970, 1880364, 2350455, 2820546, 3133940, 4700910, 5641092, 7051365, 9401820, 14102730, 28205460]

約数ペア:

[(1, 28205460), (2, 14102730), (3, 9401820), (4, 7051365), (5, 5641092), (6, 4700910), (9, 3133940), (10, 2820546), (12, 2350455), (15, 1880364), (18, 1566970), (20, 1410273), (30, 940182), (36, 783485), (45, 626788), (60, 470091), (71, 397260), (90, 313394), (142, 198630), (180, 156697), (213, 132420), (284, 99315), (355, 79452), (426, 66210), (639, 44140), (710, 39726), (852, 33105), (1065, 26484), (1278, 22070), (1420, 19863), (2130, 13242), (2207, 12780), (2556, 11035), (3195, 8828), (4260, 6621), (4414, 6390)]