18903537

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:275

約数の個数: 40

約数和(自身を含む): 30317760

約数和(自身を除く): 11414223

約数列:

[1, 3, 9, 19, 27, 57, 71, 81, 171, 173, 213, 513, 519, 639, 1349, 1539, 1557, 1917, 3287, 4047, 4671, 5751, 9861, 12141, 12283, 14013, 29583, 36423, 36849, 88749, 109269, 110547, 233377, 266247, 331641, 700131, 994923, 2100393, 6301179, 18903537]

約数ペア:

[(1, 18903537), (3, 6301179), (9, 2100393), (19, 994923), (27, 700131), (57, 331641), (71, 266247), (81, 233377), (171, 110547), (173, 109269), (213, 88749), (513, 36849), (519, 36423), (639, 29583), (1349, 14013), (1539, 12283), (1557, 12141), (1917, 9861), (3287, 5751), (4047, 4671)]