199211805

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{241}}^1$

素因数の和:428

約数の個数: 80

約数和(自身を含む): 388630704

約数和(自身を除く): 189418899

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 157, 195, 241, 351, 405, 471, 585, 723, 785, 1053, 1205, 1413, 1755, 2041, 2169, 2355, 3133, 3615, 4239, 5265, 6123, 6507, 7065, 9399, 10205, 10845, 12717, 15665, 18369, 19521, 21195, 28197, 30615, 32535, 37837, 46995, 55107, 63585, 84591, 91845, 97605, 113511, 140985, 165321, 189185, 253773, 275535, 340533, 422955, 491881, 567555, 826605, 1021599, 1268865, 1475643, 1702665, 2459405, 3064797, 4426929, 5107995, 7378215, 13280787, 15323985, 22134645, 39842361, 66403935, 199211805]

約数ペア:

[(1, 199211805), (3, 66403935), (5, 39842361), (9, 22134645), (13, 15323985), (15, 13280787), (27, 7378215), (39, 5107995), (45, 4426929), (65, 3064797), (81, 2459405), (117, 1702665), (135, 1475643), (157, 1268865), (195, 1021599), (241, 826605), (351, 567555), (405, 491881), (471, 422955), (585, 340533), (723, 275535), (785, 253773), (1053, 189185), (1205, 165321), (1413, 140985), (1755, 113511), (2041, 97605), (2169, 91845), (2355, 84591), (3133, 63585), (3615, 55107), (4239, 46995), (5265, 37837), (6123, 32535), (6507, 30615), (7065, 28197), (9399, 21195), (10205, 19521), (10845, 18369), (12717, 15665)]