644328

素因数分解:

$2^3\times 3^3\times {\mathrm{19}}^1\times {\mathrm{157}}^1$

素因数の和:191

約数の個数: 64

約数和(自身を含む): 1896000

約数和(自身を除く): 1251672

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 19, 24, 27, 36, 38, 54, 57, 72, 76, 108, 114, 152, 157, 171, 216, 228, 314, 342, 456, 471, 513, 628, 684, 942, 1026, 1256, 1368, 1413, 1884, 2052, 2826, 2983, 3768, 4104, 4239, 5652, 5966, 8478, 8949, 11304, 11932, 16956, 17898, 23864, 26847, 33912, 35796, 53694, 71592, 80541, 107388, 161082, 214776, 322164, 644328]

約数ペア:

[(1, 644328), (2, 322164), (3, 214776), (4, 161082), (6, 107388), (8, 80541), (9, 71592), (12, 53694), (18, 35796), (19, 33912), (24, 26847), (27, 23864), (36, 17898), (38, 16956), (54, 11932), (57, 11304), (72, 8949), (76, 8478), (108, 5966), (114, 5652), (152, 4239), (157, 4104), (171, 3768), (216, 2983), (228, 2826), (314, 2052), (342, 1884), (456, 1413), (471, 1368), (513, 1256), (628, 1026), (684, 942)]