20252128

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{547}}^1$

素因数の和:659

約数の個数: 48

約数和(自身を含む): 43500240

約数和(自身を除く): 23248112

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 89, 104, 178, 208, 356, 416, 547, 712, 1094, 1157, 1424, 2188, 2314, 2848, 4376, 4628, 7111, 8752, 9256, 14222, 17504, 18512, 28444, 37024, 48683, 56888, 97366, 113776, 194732, 227552, 389464, 632879, 778928, 1265758, 1557856, 2531516, 5063032, 10126064, 20252128]

約数ペア:

[(1, 20252128), (2, 10126064), (4, 5063032), (8, 2531516), (13, 1557856), (16, 1265758), (26, 778928), (32, 632879), (52, 389464), (89, 227552), (104, 194732), (178, 113776), (208, 97366), (356, 56888), (416, 48683), (547, 37024), (712, 28444), (1094, 18512), (1157, 17504), (1424, 14222), (2188, 9256), (2314, 8752), (2848, 7111), (4376, 4628)]