388793860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{213623}}^1$

素因数の和:213652

約数の個数: 48

約数和(自身を含む): 1004887296

約数和(自身を除く): 616093436

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 213623, 427246, 854492, 1068115, 1495361, 2136230, 2777099, 2990722, 4272460, 5554198, 5981444, 7476805, 11108396, 13885495, 14953610, 19439693, 27770990, 29907220, 38879386, 55541980, 77758772, 97198465, 194396930, 388793860]

約数ペア:

[(1, 388793860), (2, 194396930), (4, 97198465), (5, 77758772), (7, 55541980), (10, 38879386), (13, 29907220), (14, 27770990), (20, 19439693), (26, 14953610), (28, 13885495), (35, 11108396), (52, 7476805), (65, 5981444), (70, 5554198), (91, 4272460), (130, 2990722), (140, 2777099), (182, 2136230), (260, 1495361), (364, 1068115), (455, 854492), (910, 427246), (1820, 213623)]