20205500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{251}}^1$

素因数の和:300

約数の個数: 96

約数和(自身を含む): 52835328

約数和(自身を除く): 32629828

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 25, 28, 35, 46, 50, 70, 92, 100, 115, 125, 140, 161, 175, 230, 250, 251, 322, 350, 460, 500, 502, 575, 644, 700, 805, 875, 1004, 1150, 1255, 1610, 1750, 1757, 2300, 2510, 2875, 3220, 3500, 3514, 4025, 5020, 5750, 5773, 6275, 7028, 8050, 8785, 11500, 11546, 12550, 16100, 17570, 20125, 23092, 25100, 28865, 31375, 35140, 40250, 40411, 43925, 57730, 62750, 80500, 80822, 87850, 115460, 125500, 144325, 161644, 175700, 202055, 219625, 288650, 404110, 439250, 577300, 721625, 808220, 878500, 1010275, 1443250, 2020550, 2886500, 4041100, 5051375, 10102750, 20205500]

約数ペア:

[(1, 20205500), (2, 10102750), (4, 5051375), (5, 4041100), (7, 2886500), (10, 2020550), (14, 1443250), (20, 1010275), (23, 878500), (25, 808220), (28, 721625), (35, 577300), (46, 439250), (50, 404110), (70, 288650), (92, 219625), (100, 202055), (115, 175700), (125, 161644), (140, 144325), (161, 125500), (175, 115460), (230, 87850), (250, 80822), (251, 80500), (322, 62750), (350, 57730), (460, 43925), (500, 40411), (502, 40250), (575, 35140), (644, 31375), (700, 28865), (805, 25100), (875, 23092), (1004, 20125), (1150, 17570), (1255, 16100), (1610, 12550), (1750, 11546), (1757, 11500), (2300, 8785), (2510, 8050), (2875, 7028), (3220, 6275), (3500, 5773), (3514, 5750), (4025, 5020)]