989780155

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{37}}^2\times {\mathrm{227}}^1$

素因数の和:333

約数の個数: 72

約数和(自身を含む): 1535971248

約数和(自身を除く): 546191093

約数列:

[1, 5, 7, 13, 35, 37, 49, 65, 91, 185, 227, 245, 259, 455, 481, 637, 1135, 1295, 1369, 1589, 1813, 2405, 2951, 3185, 3367, 6845, 7945, 8399, 9065, 9583, 11123, 14755, 16835, 17797, 20657, 23569, 41995, 47915, 55615, 58793, 67081, 88985, 103285, 109187, 117845, 124579, 144599, 293965, 310763, 335405, 411551, 545935, 622895, 722995, 764309, 872053, 1553815, 2057755, 2175341, 3821545, 4039919, 4360265, 5350163, 10876705, 15227387, 20199595, 26750815, 28279433, 76136935, 141397165, 197956031, 989780155]

約数ペア:

[(1, 989780155), (5, 197956031), (7, 141397165), (13, 76136935), (35, 28279433), (37, 26750815), (49, 20199595), (65, 15227387), (91, 10876705), (185, 5350163), (227, 4360265), (245, 4039919), (259, 3821545), (455, 2175341), (481, 2057755), (637, 1553815), (1135, 872053), (1295, 764309), (1369, 722995), (1589, 622895), (1813, 545935), (2405, 411551), (2951, 335405), (3185, 310763), (3367, 293965), (6845, 144599), (7945, 124579), (8399, 117845), (9065, 109187), (9583, 103285), (11123, 88985), (14755, 67081), (16835, 58793), (17797, 55615), (20657, 47915), (23569, 41995)]