18712305

素因数分解:

$3^2\times 5^1\times {\mathrm{631}}^1\times {\mathrm{659}}^1$

素因数の和:1301

約数の個数: 24

約数和(自身を含む): 32535360

約数和(自身を除く): 13823055

約数列:

[1, 3, 5, 9, 15, 45, 631, 659, 1893, 1977, 3155, 3295, 5679, 5931, 9465, 9885, 28395, 29655, 415829, 1247487, 2079145, 3742461, 6237435, 18712305]

約数ペア:

[(1, 18712305), (3, 6237435), (5, 3742461), (9, 2079145), (15, 1247487), (45, 415829), (631, 29655), (659, 28395), (1893, 9885), (1977, 9465), (3155, 5931), (3295, 5679)]