21101360

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{769}}^1$

素因数の和:803

約数の個数: 80

約数和(自身を含む): 57288000

約数和(自身を除く): 36186640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 343, 392, 490, 560, 686, 769, 784, 980, 1372, 1538, 1715, 1960, 2744, 3076, 3430, 3845, 3920, 5383, 5488, 6152, 6860, 7690, 10766, 12304, 13720, 15380, 21532, 26915, 27440, 30760, 37681, 43064, 53830, 61520, 75362, 86128, 107660, 150724, 188405, 215320, 263767, 301448, 376810, 430640, 527534, 602896, 753620, 1055068, 1318835, 1507240, 2110136, 2637670, 3014480, 4220272, 5275340, 10550680, 21101360]

約数ペア:

[(1, 21101360), (2, 10550680), (4, 5275340), (5, 4220272), (7, 3014480), (8, 2637670), (10, 2110136), (14, 1507240), (16, 1318835), (20, 1055068), (28, 753620), (35, 602896), (40, 527534), (49, 430640), (56, 376810), (70, 301448), (80, 263767), (98, 215320), (112, 188405), (140, 150724), (196, 107660), (245, 86128), (280, 75362), (343, 61520), (392, 53830), (490, 43064), (560, 37681), (686, 30760), (769, 27440), (784, 26915), (980, 21532), (1372, 15380), (1538, 13720), (1715, 12304), (1960, 10766), (2744, 7690), (3076, 6860), (3430, 6152), (3845, 5488), (3920, 5383)]