18734811

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:235

約数の個数: 32

約数和(自身を含む): 27371520

約数和(自身を除く): 8636709

約数列:

[1, 3, 23, 47, 53, 69, 109, 141, 159, 327, 1081, 1219, 2491, 2507, 3243, 3657, 5123, 5777, 7473, 7521, 15369, 17331, 57293, 117829, 132871, 171879, 271519, 353487, 398613, 814557, 6244937, 18734811]

約数ペア:

[(1, 18734811), (3, 6244937), (23, 814557), (47, 398613), (53, 353487), (69, 271519), (109, 171879), (141, 132871), (159, 117829), (327, 57293), (1081, 17331), (1219, 15369), (2491, 7521), (2507, 7473), (3243, 5777), (3657, 5123)]