16805475

素因数分解:

$3^4\times 5^2\times {\mathrm{43}}^1\times {\mathrm{193}}^1$

素因数の和:258

約数の個数: 60

約数和(自身を含む): 32018536

約数和(自身を除く): 15213061

約数列:

[1, 3, 5, 9, 15, 25, 27, 43, 45, 75, 81, 129, 135, 193, 215, 225, 387, 405, 579, 645, 675, 965, 1075, 1161, 1737, 1935, 2025, 2895, 3225, 3483, 4825, 5211, 5805, 8299, 8685, 9675, 14475, 15633, 17415, 24897, 26055, 29025, 41495, 43425, 74691, 78165, 87075, 124485, 130275, 207475, 224073, 373455, 390825, 622425, 672219, 1120365, 1867275, 3361095, 5601825, 16805475]

約数ペア:

[(1, 16805475), (3, 5601825), (5, 3361095), (9, 1867275), (15, 1120365), (25, 672219), (27, 622425), (43, 390825), (45, 373455), (75, 224073), (81, 207475), (129, 130275), (135, 124485), (193, 87075), (215, 78165), (225, 74691), (387, 43425), (405, 41495), (579, 29025), (645, 26055), (675, 24897), (965, 17415), (1075, 15633), (1161, 14475), (1737, 9675), (1935, 8685), (2025, 8299), (2895, 5805), (3225, 5211), (3483, 4825)]