20751328

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{601}}^1$

素因数の和:707

約数の個数: 48

約数和(自身を含む): 44600976

約数和(自身を除く): 23849648

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 83, 104, 166, 208, 332, 416, 601, 664, 1079, 1202, 1328, 2158, 2404, 2656, 4316, 4808, 7813, 8632, 9616, 15626, 17264, 19232, 31252, 34528, 49883, 62504, 99766, 125008, 199532, 250016, 399064, 648479, 798128, 1296958, 1596256, 2593916, 5187832, 10375664, 20751328]

約数ペア:

[(1, 20751328), (2, 10375664), (4, 5187832), (8, 2593916), (13, 1596256), (16, 1296958), (26, 798128), (32, 648479), (52, 399064), (83, 250016), (104, 199532), (166, 125008), (208, 99766), (332, 62504), (416, 49883), (601, 34528), (664, 31252), (1079, 19232), (1202, 17264), (1328, 15626), (2158, 9616), (2404, 8632), (2656, 7813), (4316, 4808)]