278320872956

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{997}}^1\times {\mathrm{321611}}^1$

素因数の和:322650

約数の個数: 48

約数和(自身を含む): 575176046592

約数和(自身を除く): 296855173636

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868, 997, 1994, 3988, 6979, 13958, 27916, 30907, 61814, 123628, 216349, 321611, 432698, 643222, 865396, 1286444, 2251277, 4502554, 9005108, 9969941, 19939882, 39879764, 69789587, 139579174, 279158348, 320646167, 641292334, 1282584668, 2244523169, 4489046338, 8978092676, 9940031177, 19880062354, 39760124708, 69580218239, 139160436478, 278320872956]

約数ペア:

[(1, 278320872956), (2, 139160436478), (4, 69580218239), (7, 39760124708), (14, 19880062354), (28, 9940031177), (31, 8978092676), (62, 4489046338), (124, 2244523169), (217, 1282584668), (434, 641292334), (868, 320646167), (997, 279158348), (1994, 139579174), (3988, 69789587), (6979, 39879764), (13958, 19939882), (27916, 9969941), (30907, 9005108), (61814, 4502554), (123628, 2251277), (216349, 1286444), (321611, 865396), (432698, 643222)]