18931563

素因数分解:

$3^4\times 7^1\times {\mathrm{173}}^1\times {\mathrm{193}}^1$

素因数の和:385

約数の個数: 40

約数和(自身を含む): 32675808

約数和(自身を除く): 13744245

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 173, 189, 193, 519, 567, 579, 1211, 1351, 1557, 1737, 3633, 4053, 4671, 5211, 10899, 12159, 14013, 15633, 32697, 33389, 36477, 98091, 100167, 109431, 233723, 300501, 701169, 901503, 2103507, 2704509, 6310521, 18931563]

約数ペア:

[(1, 18931563), (3, 6310521), (7, 2704509), (9, 2103507), (21, 901503), (27, 701169), (63, 300501), (81, 233723), (173, 109431), (189, 100167), (193, 98091), (519, 36477), (567, 33389), (579, 32697), (1211, 15633), (1351, 14013), (1557, 12159), (1737, 10899), (3633, 5211), (4053, 4671)]