21785625

素因数分解:

$3^3\times 5^4\times {\mathrm{1291}}^1$

素因数の和:1320

約数の個数: 40

約数和(自身を含む): 40362080

約数和(自身を除く): 18576455

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 125, 135, 225, 375, 625, 675, 1125, 1291, 1875, 3375, 3873, 5625, 6455, 11619, 16875, 19365, 32275, 34857, 58095, 96825, 161375, 174285, 290475, 484125, 806875, 871425, 1452375, 2420625, 4357125, 7261875, 21785625]

約数ペア:

[(1, 21785625), (3, 7261875), (5, 4357125), (9, 2420625), (15, 1452375), (25, 871425), (27, 806875), (45, 484125), (75, 290475), (125, 174285), (135, 161375), (225, 96825), (375, 58095), (625, 34857), (675, 32275), (1125, 19365), (1291, 16875), (1875, 11619), (3375, 6455), (3873, 5625)]