207819045

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{307}}^2$

素因数の和:639

約数の個数: 54

約数和(自身を含む): 420400422

約数和(自身を除く): 212581377

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 307, 315, 441, 735, 921, 1535, 2149, 2205, 2763, 4605, 6447, 10745, 13815, 15043, 19341, 32235, 45129, 75215, 94249, 96705, 135387, 225645, 282747, 471245, 659743, 676935, 848241, 1413735, 1979229, 3298715, 4241205, 4618201, 5937687, 9896145, 13854603, 23091005, 29688435, 41563809, 69273015, 207819045]

約数ペア:

[(1, 207819045), (3, 69273015), (5, 41563809), (7, 29688435), (9, 23091005), (15, 13854603), (21, 9896145), (35, 5937687), (45, 4618201), (49, 4241205), (63, 3298715), (105, 1979229), (147, 1413735), (245, 848241), (307, 676935), (315, 659743), (441, 471245), (735, 282747), (921, 225645), (1535, 135387), (2149, 96705), (2205, 94249), (2763, 75215), (4605, 45129), (6447, 32235), (10745, 19341), (13815, 15043)]