1320809984

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{198439}}^1$

素因数の和:198470

約数の個数: 40

約数和(自身を含む): 2842057680

約数和(自身を除く): 1521247696

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 256, 416, 512, 832, 1664, 3328, 6656, 198439, 396878, 793756, 1587512, 2579707, 3175024, 5159414, 6350048, 10318828, 12700096, 20637656, 25400192, 41275312, 50800384, 82550624, 101600768, 165101248, 330202496, 660404992, 1320809984]

約数ペア:

[(1, 1320809984), (2, 660404992), (4, 330202496), (8, 165101248), (13, 101600768), (16, 82550624), (26, 50800384), (32, 41275312), (52, 25400192), (64, 20637656), (104, 12700096), (128, 10318828), (208, 6350048), (256, 5159414), (416, 3175024), (512, 2579707), (832, 1587512), (1664, 793756), (3328, 396878), (6656, 198439)]