21605778

素因数分解:

$2^1\times 3^4\times {\mathrm{197}}^1\times {\mathrm{677}}^1$

素因数の和:888

約数の個数: 40

約数和(自身を含む): 48730572

約数和(自身を除く): 27124794

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 197, 394, 591, 677, 1182, 1354, 1773, 2031, 3546, 4062, 5319, 6093, 10638, 12186, 15957, 18279, 31914, 36558, 54837, 109674, 133369, 266738, 400107, 800214, 1200321, 2400642, 3600963, 7201926, 10802889, 21605778]

約数ペア:

[(1, 21605778), (2, 10802889), (3, 7201926), (6, 3600963), (9, 2400642), (18, 1200321), (27, 800214), (54, 400107), (81, 266738), (162, 133369), (197, 109674), (394, 54837), (591, 36558), (677, 31914), (1182, 18279), (1354, 15957), (1773, 12186), (2031, 10638), (3546, 6093), (4062, 5319)]