19958445

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{313}}^1$

素因数の和:446

約数の個数: 48

約数和(自身を含む): 37717680

約数和(自身を除く): 17759235

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 109, 117, 195, 313, 327, 545, 585, 939, 981, 1417, 1565, 1635, 2817, 4069, 4251, 4695, 4905, 7085, 12207, 12753, 14085, 20345, 21255, 34117, 36621, 61035, 63765, 102351, 170585, 183105, 307053, 443521, 511755, 1330563, 1535265, 2217605, 3991689, 6652815, 19958445]

約数ペア:

[(1, 19958445), (3, 6652815), (5, 3991689), (9, 2217605), (13, 1535265), (15, 1330563), (39, 511755), (45, 443521), (65, 307053), (109, 183105), (117, 170585), (195, 102351), (313, 63765), (327, 61035), (545, 36621), (585, 34117), (939, 21255), (981, 20345), (1417, 14085), (1565, 12753), (1635, 12207), (2817, 7085), (4069, 4905), (4251, 4695)]