18873309

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{269}}^1$

素因数の和:549

約数の個数: 32

約数和(自身を含む): 31207680

約数和(自身を除く): 12334371

約数列:

[1, 3, 7, 13, 21, 39, 91, 257, 269, 273, 771, 807, 1799, 1883, 3341, 3497, 5397, 5649, 10023, 10491, 23387, 24479, 69133, 70161, 73437, 207399, 483931, 898729, 1451793, 2696187, 6291103, 18873309]

約数ペア:

[(1, 18873309), (3, 6291103), (7, 2696187), (13, 1451793), (21, 898729), (39, 483931), (91, 207399), (257, 73437), (269, 70161), (273, 69133), (771, 24479), (807, 23387), (1799, 10491), (1883, 10023), (3341, 5649), (3497, 5397)]