21391794

素因数分解:

$2^1\times 3^2\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{317}}^1$

素因数の和:511

約数の個数: 48

約数和(自身を含む): 48814272

約数和(自身を除く): 27422478

約数列:

[1, 2, 3, 6, 9, 18, 23, 46, 69, 138, 163, 207, 317, 326, 414, 489, 634, 951, 978, 1467, 1902, 2853, 2934, 3749, 5706, 7291, 7498, 11247, 14582, 21873, 22494, 33741, 43746, 51671, 65619, 67482, 103342, 131238, 155013, 310026, 465039, 930078, 1188433, 2376866, 3565299, 7130598, 10695897, 21391794]

約数ペア:

[(1, 21391794), (2, 10695897), (3, 7130598), (6, 3565299), (9, 2376866), (18, 1188433), (23, 930078), (46, 465039), (69, 310026), (138, 155013), (163, 131238), (207, 103342), (317, 67482), (326, 65619), (414, 51671), (489, 43746), (634, 33741), (951, 22494), (978, 21873), (1467, 14582), (1902, 11247), (2853, 7498), (2934, 7291), (3749, 5706)]