19978952

素因数分解:

$2^3\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1811}}^1$

素因数の和:2021

約数の個数: 32

約数和(自身を含む): 43053120

約数和(自身を除く): 23074168

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 197, 394, 788, 1379, 1576, 1811, 2758, 3622, 5516, 7244, 11032, 12677, 14488, 25354, 50708, 101416, 356767, 713534, 1427068, 2497369, 2854136, 4994738, 9989476, 19978952]

約数ペア:

[(1, 19978952), (2, 9989476), (4, 4994738), (7, 2854136), (8, 2497369), (14, 1427068), (28, 713534), (56, 356767), (197, 101416), (394, 50708), (788, 25354), (1379, 14488), (1576, 12677), (1811, 11032), (2758, 7244), (3622, 5516)]