20836900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{17}}^2\times {\mathrm{103}}^1$

素因数の和:158

約数の個数: 108

約数和(自身を含む): 55427008

約数和(自身を除く): 34590108

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 25, 28, 34, 35, 50, 68, 70, 85, 100, 103, 119, 140, 170, 175, 206, 238, 289, 340, 350, 412, 425, 476, 515, 578, 595, 700, 721, 850, 1030, 1156, 1190, 1442, 1445, 1700, 1751, 2023, 2060, 2380, 2575, 2884, 2890, 2975, 3502, 3605, 4046, 5150, 5780, 5950, 7004, 7210, 7225, 8092, 8755, 10115, 10300, 11900, 12257, 14420, 14450, 17510, 18025, 20230, 24514, 28900, 29767, 35020, 36050, 40460, 43775, 49028, 50575, 59534, 61285, 72100, 87550, 101150, 119068, 122570, 148835, 175100, 202300, 208369, 245140, 297670, 306425, 416738, 595340, 612850, 744175, 833476, 1041845, 1225700, 1488350, 2083690, 2976700, 4167380, 5209225, 10418450, 20836900]

約数ペア:

[(1, 20836900), (2, 10418450), (4, 5209225), (5, 4167380), (7, 2976700), (10, 2083690), (14, 1488350), (17, 1225700), (20, 1041845), (25, 833476), (28, 744175), (34, 612850), (35, 595340), (50, 416738), (68, 306425), (70, 297670), (85, 245140), (100, 208369), (103, 202300), (119, 175100), (140, 148835), (170, 122570), (175, 119068), (206, 101150), (238, 87550), (289, 72100), (340, 61285), (350, 59534), (412, 50575), (425, 49028), (476, 43775), (515, 40460), (578, 36050), (595, 35020), (700, 29767), (721, 28900), (850, 24514), (1030, 20230), (1156, 18025), (1190, 17510), (1442, 14450), (1445, 14420), (1700, 12257), (1751, 11900), (2023, 10300), (2060, 10115), (2380, 8755), (2575, 8092), (2884, 7225), (2890, 7210), (2975, 7004), (3502, 5950), (3605, 5780), (4046, 5150)]