18874965

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{653}}^1$

素因数の和:749

約数の個数: 32

約数和(自身を含む): 31643136

約数和(自身を除く): 12768171

約数列:

[1, 3, 5, 15, 41, 47, 123, 141, 205, 235, 615, 653, 705, 1927, 1959, 3265, 5781, 9635, 9795, 26773, 28905, 30691, 80319, 92073, 133865, 153455, 401595, 460365, 1258331, 3774993, 6291655, 18874965]

約数ペア:

[(1, 18874965), (3, 6291655), (5, 3774993), (15, 1258331), (41, 460365), (47, 401595), (123, 153455), (141, 133865), (205, 92073), (235, 80319), (615, 30691), (653, 28905), (705, 26773), (1927, 9795), (1959, 9635), (3265, 5781)]