20888700

素因数分解:

$2^2\times 3^1\times 5^2\times 7^4\times {\mathrm{29}}^1$

素因数の和:74

約数の個数: 180

約数和(自身を含む): 72938040

約数和(自身を除く): 52049340

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 29, 30, 35, 42, 49, 50, 58, 60, 70, 75, 84, 87, 98, 100, 105, 116, 140, 145, 147, 150, 174, 175, 196, 203, 210, 245, 290, 294, 300, 343, 348, 350, 406, 420, 435, 490, 525, 580, 588, 609, 686, 700, 725, 735, 812, 870, 980, 1015, 1029, 1050, 1218, 1225, 1372, 1421, 1450, 1470, 1715, 1740, 2030, 2058, 2100, 2175, 2401, 2436, 2450, 2842, 2900, 2940, 3045, 3430, 3675, 4060, 4116, 4263, 4350, 4802, 4900, 5075, 5145, 5684, 6090, 6860, 7105, 7203, 7350, 8526, 8575, 8700, 9604, 9947, 10150, 10290, 12005, 12180, 14210, 14406, 14700, 15225, 17052, 17150, 19894, 20300, 20580, 21315, 24010, 25725, 28420, 28812, 29841, 30450, 34300, 35525, 36015, 39788, 42630, 48020, 49735, 51450, 59682, 60025, 60900, 69629, 71050, 72030, 85260, 99470, 102900, 106575, 119364, 120050, 139258, 142100, 144060, 149205, 180075, 198940, 208887, 213150, 240100, 248675, 278516, 298410, 348145, 360150, 417774, 426300, 497350, 596820, 696290, 720300, 746025, 835548, 994700, 1044435, 1392580, 1492050, 1740725, 2088870, 2984100, 3481450, 4177740, 5222175, 6962900, 10444350, 20888700]

約数ペア:

[(1, 20888700), (2, 10444350), (3, 6962900), (4, 5222175), (5, 4177740), (6, 3481450), (7, 2984100), (10, 2088870), (12, 1740725), (14, 1492050), (15, 1392580), (20, 1044435), (21, 994700), (25, 835548), (28, 746025), (29, 720300), (30, 696290), (35, 596820), (42, 497350), (49, 426300), (50, 417774), (58, 360150), (60, 348145), (70, 298410), (75, 278516), (84, 248675), (87, 240100), (98, 213150), (100, 208887), (105, 198940), (116, 180075), (140, 149205), (145, 144060), (147, 142100), (150, 139258), (174, 120050), (175, 119364), (196, 106575), (203, 102900), (210, 99470), (245, 85260), (290, 72030), (294, 71050), (300, 69629), (343, 60900), (348, 60025), (350, 59682), (406, 51450), (420, 49735), (435, 48020), (490, 42630), (525, 39788), (580, 36015), (588, 35525), (609, 34300), (686, 30450), (700, 29841), (725, 28812), (735, 28420), (812, 25725), (870, 24010), (980, 21315), (1015, 20580), (1029, 20300), (1050, 19894), (1218, 17150), (1225, 17052), (1372, 15225), (1421, 14700), (1450, 14406), (1470, 14210), (1715, 12180), (1740, 12005), (2030, 10290), (2058, 10150), (2100, 9947), (2175, 9604), (2401, 8700), (2436, 8575), (2450, 8526), (2842, 7350), (2900, 7203), (2940, 7105), (3045, 6860), (3430, 6090), (3675, 5684), (4060, 5145), (4116, 5075), (4263, 4900), (4350, 4802)]