21257200

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{2797}}^1$

素因数の和:2834

約数の個数: 60

約数和(自身を含む): 53777560

約数和(自身を除く): 32520360

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 152, 190, 200, 304, 380, 400, 475, 760, 950, 1520, 1900, 2797, 3800, 5594, 7600, 11188, 13985, 22376, 27970, 44752, 53143, 55940, 69925, 106286, 111880, 139850, 212572, 223760, 265715, 279700, 425144, 531430, 559400, 850288, 1062860, 1118800, 1328575, 2125720, 2657150, 4251440, 5314300, 10628600, 21257200]

約数ペア:

[(1, 21257200), (2, 10628600), (4, 5314300), (5, 4251440), (8, 2657150), (10, 2125720), (16, 1328575), (19, 1118800), (20, 1062860), (25, 850288), (38, 559400), (40, 531430), (50, 425144), (76, 279700), (80, 265715), (95, 223760), (100, 212572), (152, 139850), (190, 111880), (200, 106286), (304, 69925), (380, 55940), (400, 53143), (475, 44752), (760, 27970), (950, 22376), (1520, 13985), (1900, 11188), (2797, 7600), (3800, 5594)]