20757135

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{911}}^1$

素因数の和:964

約数の個数: 48

約数和(自身を含む): 39923712

約数和(自身を除く): 19166577

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 49, 93, 105, 147, 155, 217, 245, 465, 651, 735, 911, 1085, 1519, 2733, 3255, 4555, 4557, 6377, 7595, 13665, 19131, 22785, 28241, 31885, 44639, 84723, 95655, 133917, 141205, 197687, 223195, 423615, 593061, 669585, 988435, 1383809, 2965305, 4151427, 6919045, 20757135]

約数ペア:

[(1, 20757135), (3, 6919045), (5, 4151427), (7, 2965305), (15, 1383809), (21, 988435), (31, 669585), (35, 593061), (49, 423615), (93, 223195), (105, 197687), (147, 141205), (155, 133917), (217, 95655), (245, 84723), (465, 44639), (651, 31885), (735, 28241), (911, 22785), (1085, 19131), (1519, 13665), (2733, 7595), (3255, 6377), (4555, 4557)]