21605080

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{73}}^1\times {\mathrm{151}}^1$

素因数の和:249

約数の個数: 96

約数和(自身を含む): 57702240

約数和(自身を除く): 36097160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 73, 98, 140, 146, 151, 196, 245, 280, 292, 302, 365, 392, 490, 511, 584, 604, 730, 755, 980, 1022, 1057, 1208, 1460, 1510, 1960, 2044, 2114, 2555, 2920, 3020, 3577, 4088, 4228, 5110, 5285, 6040, 7154, 7399, 8456, 10220, 10570, 11023, 14308, 14798, 17885, 20440, 21140, 22046, 28616, 29596, 35770, 36995, 42280, 44092, 55115, 59192, 71540, 73990, 77161, 88184, 110230, 143080, 147980, 154322, 220460, 295960, 308644, 385805, 440920, 540127, 617288, 771610, 1080254, 1543220, 2160508, 2700635, 3086440, 4321016, 5401270, 10802540, 21605080]

約数ペア:

[(1, 21605080), (2, 10802540), (4, 5401270), (5, 4321016), (7, 3086440), (8, 2700635), (10, 2160508), (14, 1543220), (20, 1080254), (28, 771610), (35, 617288), (40, 540127), (49, 440920), (56, 385805), (70, 308644), (73, 295960), (98, 220460), (140, 154322), (146, 147980), (151, 143080), (196, 110230), (245, 88184), (280, 77161), (292, 73990), (302, 71540), (365, 59192), (392, 55115), (490, 44092), (511, 42280), (584, 36995), (604, 35770), (730, 29596), (755, 28616), (980, 22046), (1022, 21140), (1057, 20440), (1208, 17885), (1460, 14798), (1510, 14308), (1960, 11023), (2044, 10570), (2114, 10220), (2555, 8456), (2920, 7399), (3020, 7154), (3577, 6040), (4088, 5285), (4228, 5110)]