20181000

素因数分解:

$2^3\times 3^1\times 5^3\times 7^1\times {\mathrm{31}}^2$

素因数の和:93

約数の個数: 192

約数和(自身を含む): 74355840

約数和(自身を除く): 54174840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 25, 28, 30, 31, 35, 40, 42, 50, 56, 60, 62, 70, 75, 84, 93, 100, 105, 120, 124, 125, 140, 150, 155, 168, 175, 186, 200, 210, 217, 248, 250, 280, 300, 310, 350, 372, 375, 420, 434, 465, 500, 525, 600, 620, 651, 700, 744, 750, 775, 840, 868, 875, 930, 961, 1000, 1050, 1085, 1240, 1302, 1400, 1500, 1550, 1736, 1750, 1860, 1922, 2100, 2170, 2325, 2604, 2625, 2883, 3000, 3100, 3255, 3500, 3720, 3844, 3875, 4200, 4340, 4650, 4805, 5208, 5250, 5425, 5766, 6200, 6510, 6727, 7000, 7688, 7750, 8680, 9300, 9610, 10500, 10850, 11532, 11625, 13020, 13454, 14415, 15500, 16275, 18600, 19220, 20181, 21000, 21700, 23064, 23250, 24025, 26040, 26908, 27125, 28830, 31000, 32550, 33635, 38440, 40362, 43400, 46500, 48050, 53816, 54250, 57660, 65100, 67270, 72075, 80724, 81375, 93000, 96100, 100905, 108500, 115320, 120125, 130200, 134540, 144150, 161448, 162750, 168175, 192200, 201810, 217000, 240250, 269080, 288300, 325500, 336350, 360375, 403620, 480500, 504525, 576600, 651000, 672700, 720750, 807240, 840875, 961000, 1009050, 1345400, 1441500, 1681750, 2018100, 2522625, 2883000, 3363500, 4036200, 5045250, 6727000, 10090500, 20181000]

約数ペア:

[(1, 20181000), (2, 10090500), (3, 6727000), (4, 5045250), (5, 4036200), (6, 3363500), (7, 2883000), (8, 2522625), (10, 2018100), (12, 1681750), (14, 1441500), (15, 1345400), (20, 1009050), (21, 961000), (24, 840875), (25, 807240), (28, 720750), (30, 672700), (31, 651000), (35, 576600), (40, 504525), (42, 480500), (50, 403620), (56, 360375), (60, 336350), (62, 325500), (70, 288300), (75, 269080), (84, 240250), (93, 217000), (100, 201810), (105, 192200), (120, 168175), (124, 162750), (125, 161448), (140, 144150), (150, 134540), (155, 130200), (168, 120125), (175, 115320), (186, 108500), (200, 100905), (210, 96100), (217, 93000), (248, 81375), (250, 80724), (280, 72075), (300, 67270), (310, 65100), (350, 57660), (372, 54250), (375, 53816), (420, 48050), (434, 46500), (465, 43400), (500, 40362), (525, 38440), (600, 33635), (620, 32550), (651, 31000), (700, 28830), (744, 27125), (750, 26908), (775, 26040), (840, 24025), (868, 23250), (875, 23064), (930, 21700), (961, 21000), (1000, 20181), (1050, 19220), (1085, 18600), (1240, 16275), (1302, 15500), (1400, 14415), (1500, 13454), (1550, 13020), (1736, 11625), (1750, 11532), (1860, 10850), (1922, 10500), (2100, 9610), (2170, 9300), (2325, 8680), (2604, 7750), (2625, 7688), (2883, 7000), (3000, 6727), (3100, 6510), (3255, 6200), (3500, 5766), (3720, 5425), (3844, 5250), (3875, 5208), (4200, 4805), (4340, 4650)]