20181281540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{62921}}^1$

素因数の和:63045

約数の個数: 96

約数和(自身を含む): 50740300800

約数和(自身を除く): 30559019260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 79, 116, 140, 145, 158, 203, 290, 316, 395, 406, 553, 580, 790, 812, 1015, 1106, 1580, 2030, 2212, 2291, 2765, 4060, 4582, 5530, 9164, 11060, 11455, 16037, 22910, 32074, 45820, 62921, 64148, 80185, 125842, 160370, 251684, 314605, 320740, 440447, 629210, 880894, 1258420, 1761788, 1824709, 2202235, 3649418, 4404470, 4970759, 7298836, 8808940, 9123545, 9941518, 12772963, 18247090, 19883036, 24853795, 25545926, 34795313, 36494180, 49707590, 51091852, 63864815, 69590626, 99415180, 127729630, 139181252, 144152011, 173976565, 255459260, 288304022, 347953130, 576608044, 695906260, 720760055, 1009064077, 1441520110, 2018128154, 2883040220, 4036256308, 5045320385, 10090640770, 20181281540]

約数ペア:

[(1, 20181281540), (2, 10090640770), (4, 5045320385), (5, 4036256308), (7, 2883040220), (10, 2018128154), (14, 1441520110), (20, 1009064077), (28, 720760055), (29, 695906260), (35, 576608044), (58, 347953130), (70, 288304022), (79, 255459260), (116, 173976565), (140, 144152011), (145, 139181252), (158, 127729630), (203, 99415180), (290, 69590626), (316, 63864815), (395, 51091852), (406, 49707590), (553, 36494180), (580, 34795313), (790, 25545926), (812, 24853795), (1015, 19883036), (1106, 18247090), (1580, 12772963), (2030, 9941518), (2212, 9123545), (2291, 8808940), (2765, 7298836), (4060, 4970759), (4582, 4404470), (5530, 3649418), (9164, 2202235), (11060, 1824709), (11455, 1761788), (16037, 1258420), (22910, 880894), (32074, 629210), (45820, 440447), (62921, 320740), (64148, 314605), (80185, 251684), (125842, 160370)]