21617128

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{271}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 44798400

約数和(自身を除く): 23181272

約数列:

[1, 2, 4, 8, 13, 26, 52, 59, 104, 118, 169, 236, 271, 338, 472, 542, 676, 767, 1084, 1352, 1534, 2168, 3068, 3523, 6136, 7046, 9971, 14092, 15989, 19942, 28184, 31978, 39884, 45799, 63956, 79768, 91598, 127912, 183196, 207857, 366392, 415714, 831428, 1662856, 2702141, 5404282, 10808564, 21617128]

約数ペア:

[(1, 21617128), (2, 10808564), (4, 5404282), (8, 2702141), (13, 1662856), (26, 831428), (52, 415714), (59, 366392), (104, 207857), (118, 183196), (169, 127912), (236, 91598), (271, 79768), (338, 63956), (472, 45799), (542, 39884), (676, 31978), (767, 28184), (1084, 19942), (1352, 15989), (1534, 14092), (2168, 9971), (3068, 7046), (3523, 6136)]