19899117

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{443}}^1$

素因数の和:510

約数の個数: 48

約数和(自身を含む): 35463168

約数和(自身を除く): 15564051

約数列:

[1, 3, 7, 9, 21, 23, 31, 63, 69, 93, 161, 207, 217, 279, 443, 483, 651, 713, 1329, 1449, 1953, 2139, 3101, 3987, 4991, 6417, 9303, 10189, 13733, 14973, 27909, 30567, 41199, 44919, 71323, 91701, 96131, 123597, 213969, 288393, 315859, 641907, 865179, 947577, 2211013, 2842731, 6633039, 19899117]

約数ペア:

[(1, 19899117), (3, 6633039), (7, 2842731), (9, 2211013), (21, 947577), (23, 865179), (31, 641907), (63, 315859), (69, 288393), (93, 213969), (161, 123597), (207, 96131), (217, 91701), (279, 71323), (443, 44919), (483, 41199), (651, 30567), (713, 27909), (1329, 14973), (1449, 13733), (1953, 10189), (2139, 9303), (3101, 6417), (3987, 4991)]