254486440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{15787}}^1$

素因数の和:15842

約数の個数: 64

約数和(自身を含む): 636572160

約数和(自身を除く): 382085720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1240, 1612, 2015, 3224, 4030, 8060, 15787, 16120, 31574, 63148, 78935, 126296, 157870, 205231, 315740, 410462, 489397, 631480, 820924, 978794, 1026155, 1641848, 1957588, 2052310, 2446985, 3915176, 4104620, 4893970, 6362161, 8209240, 9787940, 12724322, 19575880, 25448644, 31810805, 50897288, 63621610, 127243220, 254486440]

約数ペア:

[(1, 254486440), (2, 127243220), (4, 63621610), (5, 50897288), (8, 31810805), (10, 25448644), (13, 19575880), (20, 12724322), (26, 9787940), (31, 8209240), (40, 6362161), (52, 4893970), (62, 4104620), (65, 3915176), (104, 2446985), (124, 2052310), (130, 1957588), (155, 1641848), (248, 1026155), (260, 978794), (310, 820924), (403, 631480), (520, 489397), (620, 410462), (806, 315740), (1240, 205231), (1612, 157870), (2015, 126296), (3224, 78935), (4030, 63148), (8060, 31574), (15787, 16120)]