21317164

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{593}}^1$

素因数の和:670

約数の個数: 48

約数和(自身を含む): 43908480

約数和(自身を除く): 22591316

約数列:

[1, 2, 4, 11, 19, 22, 38, 43, 44, 76, 86, 172, 209, 418, 473, 593, 817, 836, 946, 1186, 1634, 1892, 2372, 3268, 6523, 8987, 11267, 13046, 17974, 22534, 25499, 26092, 35948, 45068, 50998, 101996, 123937, 247874, 280489, 484481, 495748, 560978, 968962, 1121956, 1937924, 5329291, 10658582, 21317164]

約数ペア:

[(1, 21317164), (2, 10658582), (4, 5329291), (11, 1937924), (19, 1121956), (22, 968962), (38, 560978), (43, 495748), (44, 484481), (76, 280489), (86, 247874), (172, 123937), (209, 101996), (418, 50998), (473, 45068), (593, 35948), (817, 26092), (836, 25499), (946, 22534), (1186, 17974), (1634, 13046), (1892, 11267), (2372, 8987), (3268, 6523)]