81396399

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{193}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 134465280

約数和(自身を除く): 53068881

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 151, 193, 399, 453, 579, 931, 1057, 1351, 2793, 2869, 3171, 3667, 4053, 7399, 8607, 9457, 11001, 20083, 22197, 25669, 28371, 29143, 60249, 77007, 87429, 140581, 179683, 204001, 421743, 539049, 553717, 612003, 1428007, 1661151, 3876019, 4284021, 11628057, 27132133, 81396399]

約数ペア:

[(1, 81396399), (3, 27132133), (7, 11628057), (19, 4284021), (21, 3876019), (49, 1661151), (57, 1428007), (133, 612003), (147, 553717), (151, 539049), (193, 421743), (399, 204001), (453, 179683), (579, 140581), (931, 87429), (1057, 77007), (1351, 60249), (2793, 29143), (2869, 28371), (3171, 25669), (3667, 22197), (4053, 20083), (7399, 11001), (8607, 9457)]