19872801

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{5857}}^1$

素因数の和:5905

約数の個数: 24

約数和(自身を含む): 31984680

約数和(自身を除く): 12111879

約数列:

[1, 3, 9, 13, 29, 39, 87, 117, 261, 377, 1131, 3393, 5857, 17571, 52713, 76141, 169853, 228423, 509559, 685269, 1528677, 2208089, 6624267, 19872801]

約数ペア:

[(1, 19872801), (3, 6624267), (9, 2208089), (13, 1528677), (29, 685269), (39, 509559), (87, 228423), (117, 169853), (261, 76141), (377, 52713), (1131, 17571), (3393, 5857)]