31139500

素因数分解:

$2^2\times 5^3\times 7^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1$

素因数の和:105

約数の個数: 144

約数和(自身を含む): 83655936

約数和(自身を除く): 52516436

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 31, 35, 41, 49, 50, 62, 70, 82, 98, 100, 124, 125, 140, 155, 164, 175, 196, 205, 217, 245, 250, 287, 310, 350, 410, 434, 490, 500, 574, 620, 700, 775, 820, 868, 875, 980, 1025, 1085, 1148, 1225, 1271, 1435, 1519, 1550, 1750, 2009, 2050, 2170, 2450, 2542, 2870, 3038, 3100, 3500, 3875, 4018, 4100, 4340, 4900, 5084, 5125, 5425, 5740, 6076, 6125, 6355, 7175, 7595, 7750, 8036, 8897, 10045, 10250, 10850, 12250, 12710, 14350, 15190, 15500, 17794, 20090, 20500, 21700, 24500, 25420, 27125, 28700, 30380, 31775, 35588, 35875, 37975, 40180, 44485, 50225, 54250, 62279, 63550, 71750, 75950, 88970, 100450, 108500, 124558, 127100, 143500, 151900, 158875, 177940, 189875, 200900, 222425, 249116, 251125, 311395, 317750, 379750, 444850, 502250, 622790, 635500, 759500, 889700, 1004500, 1112125, 1245580, 1556975, 2224250, 3113950, 4448500, 6227900, 7784875, 15569750, 31139500]

約数ペア:

[(1, 31139500), (2, 15569750), (4, 7784875), (5, 6227900), (7, 4448500), (10, 3113950), (14, 2224250), (20, 1556975), (25, 1245580), (28, 1112125), (31, 1004500), (35, 889700), (41, 759500), (49, 635500), (50, 622790), (62, 502250), (70, 444850), (82, 379750), (98, 317750), (100, 311395), (124, 251125), (125, 249116), (140, 222425), (155, 200900), (164, 189875), (175, 177940), (196, 158875), (205, 151900), (217, 143500), (245, 127100), (250, 124558), (287, 108500), (310, 100450), (350, 88970), (410, 75950), (434, 71750), (490, 63550), (500, 62279), (574, 54250), (620, 50225), (700, 44485), (775, 40180), (820, 37975), (868, 35875), (875, 35588), (980, 31775), (1025, 30380), (1085, 28700), (1148, 27125), (1225, 25420), (1271, 24500), (1435, 21700), (1519, 20500), (1550, 20090), (1750, 17794), (2009, 15500), (2050, 15190), (2170, 14350), (2450, 12710), (2542, 12250), (2870, 10850), (3038, 10250), (3100, 10045), (3500, 8897), (3875, 8036), (4018, 7750), (4100, 7595), (4340, 7175), (4900, 6355), (5084, 6125), (5125, 6076), (5425, 5740)]