642444

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:206

約数の個数: 48

約数和(自身を含む): 1698816

約数和(自身を除く): 1056372

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 31, 33, 44, 62, 66, 93, 124, 132, 157, 186, 314, 341, 372, 471, 628, 682, 942, 1023, 1364, 1727, 1884, 2046, 3454, 4092, 4867, 5181, 6908, 9734, 10362, 14601, 19468, 20724, 29202, 53537, 58404, 107074, 160611, 214148, 321222, 642444]

約数ペア:

[(1, 642444), (2, 321222), (3, 214148), (4, 160611), (6, 107074), (11, 58404), (12, 53537), (22, 29202), (31, 20724), (33, 19468), (44, 14601), (62, 10362), (66, 9734), (93, 6908), (124, 5181), (132, 4867), (157, 4092), (186, 3454), (314, 2046), (341, 1884), (372, 1727), (471, 1364), (628, 1023), (682, 942)]