16667973

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 29652480

約数和(自身を除く): 12984507

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 79, 119, 153, 197, 237, 357, 553, 591, 711, 1071, 1343, 1379, 1659, 1773, 3349, 4029, 4137, 4977, 9401, 10047, 12087, 12411, 15563, 23443, 28203, 30141, 46689, 70329, 84609, 108941, 140067, 210987, 264571, 326823, 793713, 980469, 1851997, 2381139, 5555991, 16667973]

約数ペア:

[(1, 16667973), (3, 5555991), (7, 2381139), (9, 1851997), (17, 980469), (21, 793713), (51, 326823), (63, 264571), (79, 210987), (119, 140067), (153, 108941), (197, 84609), (237, 70329), (357, 46689), (553, 30141), (591, 28203), (711, 23443), (1071, 15563), (1343, 12411), (1379, 12087), (1659, 10047), (1773, 9401), (3349, 4977), (4029, 4137)]