257537150

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{12781}}^1$

素因数の和:12837

約数の個数: 48

約数和(自身を含む): 532549248

約数和(自身を除く): 275012098

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 310, 325, 403, 650, 775, 806, 1550, 2015, 4030, 10075, 12781, 20150, 25562, 63905, 127810, 166153, 319525, 332306, 396211, 639050, 792422, 830765, 1661530, 1981055, 3962110, 4153825, 5150743, 8307650, 9905275, 10301486, 19810550, 25753715, 51507430, 128768575, 257537150]

約数ペア:

[(1, 257537150), (2, 128768575), (5, 51507430), (10, 25753715), (13, 19810550), (25, 10301486), (26, 9905275), (31, 8307650), (50, 5150743), (62, 4153825), (65, 3962110), (130, 1981055), (155, 1661530), (310, 830765), (325, 792422), (403, 639050), (650, 396211), (775, 332306), (806, 319525), (1550, 166153), (2015, 127810), (4030, 63905), (10075, 25562), (12781, 20150)]