9781865860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1213631}}^1$

素因数の和:1213684

約数の個数: 48

約数和(自身を含む): 22835699712

約数和(自身を除く): 13053833852

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 4030, 8060, 1213631, 2427262, 4854524, 6068155, 12136310, 15777203, 24272620, 31554406, 37622561, 63108812, 75245122, 78886015, 150490244, 157772030, 188112805, 315544060, 376225610, 489093293, 752451220, 978186586, 1956373172, 2445466465, 4890932930, 9781865860]

約数ペア:

[(1, 9781865860), (2, 4890932930), (4, 2445466465), (5, 1956373172), (10, 978186586), (13, 752451220), (20, 489093293), (26, 376225610), (31, 315544060), (52, 188112805), (62, 157772030), (65, 150490244), (124, 78886015), (130, 75245122), (155, 63108812), (260, 37622561), (310, 31554406), (403, 24272620), (620, 15777203), (806, 12136310), (1612, 6068155), (2015, 4854524), (4030, 2427262), (8060, 1213631)]