17939908

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{313}}^1$

素因数の和:436

約数の個数: 48

約数和(自身を含む): 37981440

約数和(自身を除く): 20041532

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 89, 92, 161, 178, 313, 322, 356, 623, 626, 644, 1246, 1252, 2047, 2191, 2492, 4094, 4382, 7199, 8188, 8764, 14329, 14398, 27857, 28658, 28796, 50393, 55714, 57316, 100786, 111428, 194999, 201572, 389998, 640711, 779996, 1281422, 2562844, 4484977, 8969954, 17939908]

約数ペア:

[(1, 17939908), (2, 8969954), (4, 4484977), (7, 2562844), (14, 1281422), (23, 779996), (28, 640711), (46, 389998), (89, 201572), (92, 194999), (161, 111428), (178, 100786), (313, 57316), (322, 55714), (356, 50393), (623, 28796), (626, 28658), (644, 27857), (1246, 14398), (1252, 14329), (2047, 8764), (2191, 8188), (2492, 7199), (4094, 4382)]