19735515

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^2$

素因数の和:185

約数の個数: 48

約数和(自身を含む): 36813600

約数和(自身を除く): 17078085

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 71, 87, 135, 145, 213, 261, 355, 435, 639, 783, 1065, 1305, 1917, 2059, 3195, 3915, 5041, 6177, 9585, 10295, 15123, 18531, 25205, 30885, 45369, 55593, 75615, 92655, 136107, 146189, 226845, 277965, 438567, 680535, 730945, 1315701, 2192835, 3947103, 6578505, 19735515]

約数ペア:

[(1, 19735515), (3, 6578505), (5, 3947103), (9, 2192835), (15, 1315701), (27, 730945), (29, 680535), (45, 438567), (71, 277965), (87, 226845), (135, 146189), (145, 136107), (213, 92655), (261, 75615), (355, 55593), (435, 45369), (639, 30885), (783, 25205), (1065, 18531), (1305, 15123), (1917, 10295), (2059, 9585), (3195, 6177), (3915, 5041)]