20621478

素因数分解:

$2^1\times 3^1\times {\mathrm{23}}^2\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:213

約数の個数: 48

約数和(自身を含む): 44195760

約数和(自身を除く): 23574282

約数列:

[1, 2, 3, 6, 23, 46, 69, 73, 89, 138, 146, 178, 219, 267, 438, 529, 534, 1058, 1587, 1679, 2047, 3174, 3358, 4094, 5037, 6141, 6497, 10074, 12282, 12994, 19491, 38617, 38982, 47081, 77234, 94162, 115851, 141243, 149431, 231702, 282486, 298862, 448293, 896586, 3436913, 6873826, 10310739, 20621478]

約数ペア:

[(1, 20621478), (2, 10310739), (3, 6873826), (6, 3436913), (23, 896586), (46, 448293), (69, 298862), (73, 282486), (89, 231702), (138, 149431), (146, 141243), (178, 115851), (219, 94162), (267, 77234), (438, 47081), (529, 38982), (534, 38617), (1058, 19491), (1587, 12994), (1679, 12282), (2047, 10074), (3174, 6497), (3358, 6141), (4094, 5037)]