18151988

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 35481600

約数和(自身を除く): 17329612

約数列:

[1, 2, 4, 17, 31, 34, 62, 68, 79, 109, 124, 158, 218, 316, 436, 527, 1054, 1343, 1853, 2108, 2449, 2686, 3379, 3706, 4898, 5372, 6758, 7412, 8611, 9796, 13516, 17222, 34444, 41633, 57443, 83266, 114886, 146387, 166532, 229772, 266941, 292774, 533882, 585548, 1067764, 4537997, 9075994, 18151988]

約数ペア:

[(1, 18151988), (2, 9075994), (4, 4537997), (17, 1067764), (31, 585548), (34, 533882), (62, 292774), (68, 266941), (79, 229772), (109, 166532), (124, 146387), (158, 114886), (218, 83266), (316, 57443), (436, 41633), (527, 34444), (1054, 17222), (1343, 13516), (1853, 9796), (2108, 8611), (2449, 7412), (2686, 6758), (3379, 5372), (3706, 4898)]