18979218

素因数分解:

$2^1\times 3^3\times {\mathrm{557}}^1\times {\mathrm{631}}^1$

素因数の和:1199

約数の個数: 32

約数和(自身を含む): 42318720

約数和(自身を除く): 23339502

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 557, 631, 1114, 1262, 1671, 1893, 3342, 3786, 5013, 5679, 10026, 11358, 15039, 17037, 30078, 34074, 351467, 702934, 1054401, 2108802, 3163203, 6326406, 9489609, 18979218]

約数ペア:

[(1, 18979218), (2, 9489609), (3, 6326406), (6, 3163203), (9, 2108802), (18, 1054401), (27, 702934), (54, 351467), (557, 34074), (631, 30078), (1114, 17037), (1262, 15039), (1671, 11358), (1893, 10026), (3342, 5679), (3786, 5013)]