20157900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{331}}^1$

素因数の和:384

約数の個数: 144

約数和(自身を含む): 69162240

約数和(自身を除く): 49004340

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 29, 30, 35, 42, 50, 58, 60, 70, 75, 84, 87, 100, 105, 116, 140, 145, 150, 174, 175, 203, 210, 290, 300, 331, 348, 350, 406, 420, 435, 525, 580, 609, 662, 700, 725, 812, 870, 993, 1015, 1050, 1218, 1324, 1450, 1655, 1740, 1986, 2030, 2100, 2175, 2317, 2436, 2900, 3045, 3310, 3972, 4060, 4350, 4634, 4965, 5075, 6090, 6620, 6951, 8275, 8700, 9268, 9599, 9930, 10150, 11585, 12180, 13902, 15225, 16550, 19198, 19860, 20300, 23170, 24825, 27804, 28797, 30450, 33100, 34755, 38396, 46340, 47995, 49650, 57594, 57925, 60900, 67193, 69510, 95990, 99300, 115188, 115850, 134386, 139020, 143985, 173775, 191980, 201579, 231700, 239975, 268772, 287970, 335965, 347550, 403158, 479950, 575940, 671930, 695100, 719925, 806316, 959900, 1007895, 1343860, 1439850, 1679825, 2015790, 2879700, 3359650, 4031580, 5039475, 6719300, 10078950, 20157900]

約数ペア:

[(1, 20157900), (2, 10078950), (3, 6719300), (4, 5039475), (5, 4031580), (6, 3359650), (7, 2879700), (10, 2015790), (12, 1679825), (14, 1439850), (15, 1343860), (20, 1007895), (21, 959900), (25, 806316), (28, 719925), (29, 695100), (30, 671930), (35, 575940), (42, 479950), (50, 403158), (58, 347550), (60, 335965), (70, 287970), (75, 268772), (84, 239975), (87, 231700), (100, 201579), (105, 191980), (116, 173775), (140, 143985), (145, 139020), (150, 134386), (174, 115850), (175, 115188), (203, 99300), (210, 95990), (290, 69510), (300, 67193), (331, 60900), (348, 57925), (350, 57594), (406, 49650), (420, 47995), (435, 46340), (525, 38396), (580, 34755), (609, 33100), (662, 30450), (700, 28797), (725, 27804), (812, 24825), (870, 23170), (993, 20300), (1015, 19860), (1050, 19198), (1218, 16550), (1324, 15225), (1450, 13902), (1655, 12180), (1740, 11585), (1986, 10150), (2030, 9930), (2100, 9599), (2175, 9268), (2317, 8700), (2436, 8275), (2900, 6951), (3045, 6620), (3310, 6090), (3972, 5075), (4060, 4965), (4350, 4634)]