20122900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:146

約数の個数: 144

約数和(自身を含む): 56246400

約数和(自身を除く): 36123500

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 19, 20, 25, 28, 34, 35, 38, 50, 68, 70, 76, 85, 89, 95, 100, 119, 133, 140, 170, 175, 178, 190, 238, 266, 323, 340, 350, 356, 380, 425, 445, 475, 476, 532, 595, 623, 646, 665, 700, 850, 890, 950, 1190, 1246, 1292, 1330, 1513, 1615, 1691, 1700, 1780, 1900, 2225, 2261, 2380, 2492, 2660, 2975, 3026, 3115, 3230, 3325, 3382, 4450, 4522, 5950, 6052, 6230, 6460, 6650, 6764, 7565, 8075, 8455, 8900, 9044, 10591, 11305, 11837, 11900, 12460, 13300, 15130, 15575, 16150, 16910, 21182, 22610, 23674, 28747, 30260, 31150, 32300, 33820, 37825, 42275, 42364, 45220, 47348, 52955, 56525, 57494, 59185, 62300, 75650, 84550, 105910, 113050, 114988, 118370, 143735, 151300, 169100, 201229, 211820, 226100, 236740, 264775, 287470, 295925, 402458, 529550, 574940, 591850, 718675, 804916, 1006145, 1059100, 1183700, 1437350, 2012290, 2874700, 4024580, 5030725, 10061450, 20122900]

約数ペア:

[(1, 20122900), (2, 10061450), (4, 5030725), (5, 4024580), (7, 2874700), (10, 2012290), (14, 1437350), (17, 1183700), (19, 1059100), (20, 1006145), (25, 804916), (28, 718675), (34, 591850), (35, 574940), (38, 529550), (50, 402458), (68, 295925), (70, 287470), (76, 264775), (85, 236740), (89, 226100), (95, 211820), (100, 201229), (119, 169100), (133, 151300), (140, 143735), (170, 118370), (175, 114988), (178, 113050), (190, 105910), (238, 84550), (266, 75650), (323, 62300), (340, 59185), (350, 57494), (356, 56525), (380, 52955), (425, 47348), (445, 45220), (475, 42364), (476, 42275), (532, 37825), (595, 33820), (623, 32300), (646, 31150), (665, 30260), (700, 28747), (850, 23674), (890, 22610), (950, 21182), (1190, 16910), (1246, 16150), (1292, 15575), (1330, 15130), (1513, 13300), (1615, 12460), (1691, 11900), (1700, 11837), (1780, 11305), (1900, 10591), (2225, 9044), (2261, 8900), (2380, 8455), (2492, 8075), (2660, 7565), (2975, 6764), (3026, 6650), (3115, 6460), (3230, 6230), (3325, 6052), (3382, 5950), (4450, 4522)]