19968464

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{317}}^1$

素因数の和:483

約数の個数: 40

約数和(自身を含む): 40378368

約数和(自身を除く): 20409904

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 127, 248, 254, 317, 496, 508, 634, 1016, 1268, 2032, 2536, 3937, 5072, 7874, 9827, 15748, 19654, 31496, 39308, 40259, 62992, 78616, 80518, 157232, 161036, 322072, 644144, 1248029, 2496058, 4992116, 9984232, 19968464]

約数ペア:

[(1, 19968464), (2, 9984232), (4, 4992116), (8, 2496058), (16, 1248029), (31, 644144), (62, 322072), (124, 161036), (127, 157232), (248, 80518), (254, 78616), (317, 62992), (496, 40259), (508, 39308), (634, 31496), (1016, 19654), (1268, 15748), (2032, 9827), (2536, 7874), (3937, 5072)]