843440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{811}}^1$

素因数の和:837

約数の個数: 40

約数和(自身を含む): 2114448

約数和(自身を除く): 1271008

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 811, 1040, 1622, 3244, 4055, 6488, 8110, 10543, 12976, 16220, 21086, 32440, 42172, 52715, 64880, 84344, 105430, 168688, 210860, 421720, 843440]

約数ペア:

[(1, 843440), (2, 421720), (4, 210860), (5, 168688), (8, 105430), (10, 84344), (13, 64880), (16, 52715), (20, 42172), (26, 32440), (40, 21086), (52, 16220), (65, 12976), (80, 10543), (104, 8110), (130, 6488), (208, 4055), (260, 3244), (520, 1622), (811, 1040)]