21955232

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{593}}^1$

素因数の和:705

約数の個数: 48

約数和(自身を含む): 47151720

約数和(自身を除く): 25196488

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 89, 104, 178, 208, 356, 416, 593, 712, 1157, 1186, 1424, 2314, 2372, 2848, 4628, 4744, 7709, 9256, 9488, 15418, 18512, 18976, 30836, 37024, 52777, 61672, 105554, 123344, 211108, 246688, 422216, 686101, 844432, 1372202, 1688864, 2744404, 5488808, 10977616, 21955232]

約数ペア:

[(1, 21955232), (2, 10977616), (4, 5488808), (8, 2744404), (13, 1688864), (16, 1372202), (26, 844432), (32, 686101), (52, 422216), (89, 246688), (104, 211108), (178, 123344), (208, 105554), (356, 61672), (416, 52777), (593, 37024), (712, 30836), (1157, 18976), (1186, 18512), (1424, 15418), (2314, 9488), (2372, 9256), (2848, 7709), (4628, 4744)]