217372280

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{89087}}^1$

素因数の和:89159

約数の個数: 32

約数和(自身を含む): 497111040

約数和(自身を除く): 279738760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 89087, 178174, 356348, 445435, 712696, 890870, 1781740, 3563480, 5434307, 10868614, 21737228, 27171535, 43474456, 54343070, 108686140, 217372280]

約数ペア:

[(1, 217372280), (2, 108686140), (4, 54343070), (5, 43474456), (8, 27171535), (10, 21737228), (20, 10868614), (40, 5434307), (61, 3563480), (122, 1781740), (244, 890870), (305, 712696), (488, 445435), (610, 356348), (1220, 178174), (2440, 89087)]