16721285

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{179}}^1$

素因数の和:365

約数の個数: 32

約数和(自身を含む): 24572160

約数和(自身を除く): 7850875

約数列:

[1, 5, 7, 17, 35, 85, 119, 157, 179, 595, 785, 895, 1099, 1253, 2669, 3043, 5495, 6265, 13345, 15215, 18683, 21301, 28103, 93415, 106505, 140515, 196721, 477751, 983605, 2388755, 3344257, 16721285]

約数ペア:

[(1, 16721285), (5, 3344257), (7, 2388755), (17, 983605), (35, 477751), (85, 196721), (119, 140515), (157, 106505), (179, 93415), (595, 28103), (785, 21301), (895, 18683), (1099, 15215), (1253, 13345), (2669, 6265), (3043, 5495)]