19917170

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{509}}^1$

素因数の和:579

約数の個数: 64

約数和(自身を含む): 45239040

約数和(自身を除く): 25321870

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 43, 65, 70, 86, 91, 130, 182, 215, 301, 430, 455, 509, 559, 602, 910, 1018, 1118, 1505, 2545, 2795, 3010, 3563, 3913, 5090, 5590, 6617, 7126, 7826, 13234, 17815, 19565, 21887, 33085, 35630, 39130, 43774, 46319, 66170, 92638, 109435, 153209, 218870, 231595, 284531, 306418, 463190, 569062, 766045, 1422655, 1532090, 1991717, 2845310, 3983434, 9958585, 19917170]

約数ペア:

[(1, 19917170), (2, 9958585), (5, 3983434), (7, 2845310), (10, 1991717), (13, 1532090), (14, 1422655), (26, 766045), (35, 569062), (43, 463190), (65, 306418), (70, 284531), (86, 231595), (91, 218870), (130, 153209), (182, 109435), (215, 92638), (301, 66170), (430, 46319), (455, 43774), (509, 39130), (559, 35630), (602, 33085), (910, 21887), (1018, 19565), (1118, 17815), (1505, 13234), (2545, 7826), (2795, 7126), (3010, 6617), (3563, 5590), (3913, 5090)]