281639080

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{197}}^1\times {\mathrm{347}}^1$

素因数の和:658

約数の個数: 64

約数和(自身を含む): 644941440

約数和(自身を除く): 363302360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 197, 206, 347, 394, 412, 515, 694, 788, 824, 985, 1030, 1388, 1576, 1735, 1970, 2060, 2776, 3470, 3940, 4120, 6940, 7880, 13880, 20291, 35741, 40582, 68359, 71482, 81164, 101455, 136718, 142964, 162328, 178705, 202910, 273436, 285928, 341795, 357410, 405820, 546872, 683590, 714820, 811640, 1367180, 1429640, 2734360, 7040977, 14081954, 28163908, 35204885, 56327816, 70409770, 140819540, 281639080]

約数ペア:

[(1, 281639080), (2, 140819540), (4, 70409770), (5, 56327816), (8, 35204885), (10, 28163908), (20, 14081954), (40, 7040977), (103, 2734360), (197, 1429640), (206, 1367180), (347, 811640), (394, 714820), (412, 683590), (515, 546872), (694, 405820), (788, 357410), (824, 341795), (985, 285928), (1030, 273436), (1388, 202910), (1576, 178705), (1735, 162328), (1970, 142964), (2060, 136718), (2776, 101455), (3470, 81164), (3940, 71482), (4120, 68359), (6940, 40582), (7880, 35741), (13880, 20291)]