19997928

素因数分解:

$2^3\times 3^9\times {\mathrm{127}}^1$

素因数の和:160

約数の個数: 80

約数和(自身を含む): 56686080

約数和(自身を除く): 36688152

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 127, 162, 216, 243, 254, 324, 381, 486, 508, 648, 729, 762, 972, 1016, 1143, 1458, 1524, 1944, 2187, 2286, 2916, 3048, 3429, 4374, 4572, 5832, 6561, 6858, 8748, 9144, 10287, 13122, 13716, 17496, 19683, 20574, 26244, 27432, 30861, 39366, 41148, 52488, 61722, 78732, 82296, 92583, 123444, 157464, 185166, 246888, 277749, 370332, 555498, 740664, 833247, 1110996, 1666494, 2221992, 2499741, 3332988, 4999482, 6665976, 9998964, 19997928]

約数ペア:

[(1, 19997928), (2, 9998964), (3, 6665976), (4, 4999482), (6, 3332988), (8, 2499741), (9, 2221992), (12, 1666494), (18, 1110996), (24, 833247), (27, 740664), (36, 555498), (54, 370332), (72, 277749), (81, 246888), (108, 185166), (127, 157464), (162, 123444), (216, 92583), (243, 82296), (254, 78732), (324, 61722), (381, 52488), (486, 41148), (508, 39366), (648, 30861), (729, 27432), (762, 26244), (972, 20574), (1016, 19683), (1143, 17496), (1458, 13716), (1524, 13122), (1944, 10287), (2187, 9144), (2286, 8748), (2916, 6858), (3048, 6561), (3429, 5832), (4374, 4572)]