19916850

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{23}}^2\times {\mathrm{251}}^1$

素因数の和:312

約数の個数: 72

約数和(自身を含む): 51840432

約数和(自身を除く): 31923582

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 25, 30, 46, 50, 69, 75, 115, 138, 150, 230, 251, 345, 502, 529, 575, 690, 753, 1058, 1150, 1255, 1506, 1587, 1725, 2510, 2645, 3174, 3450, 3765, 5290, 5773, 6275, 7530, 7935, 11546, 12550, 13225, 15870, 17319, 18825, 26450, 28865, 34638, 37650, 39675, 57730, 79350, 86595, 132779, 144325, 173190, 265558, 288650, 398337, 432975, 663895, 796674, 865950, 1327790, 1991685, 3319475, 3983370, 6638950, 9958425, 19916850]

約数ペア:

[(1, 19916850), (2, 9958425), (3, 6638950), (5, 3983370), (6, 3319475), (10, 1991685), (15, 1327790), (23, 865950), (25, 796674), (30, 663895), (46, 432975), (50, 398337), (69, 288650), (75, 265558), (115, 173190), (138, 144325), (150, 132779), (230, 86595), (251, 79350), (345, 57730), (502, 39675), (529, 37650), (575, 34638), (690, 28865), (753, 26450), (1058, 18825), (1150, 17319), (1255, 15870), (1506, 13225), (1587, 12550), (1725, 11546), (2510, 7935), (2645, 7530), (3174, 6275), (3450, 5773), (3765, 5290)]