2143165720

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{678217}}^1$

素因数の和:678307

約数の個数: 32

約数和(自身を含む): 4883169600

約数和(自身を除く): 2740003880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 678217, 1356434, 2712868, 3391085, 5425736, 6782170, 13564340, 27128680, 53579143, 107158286, 214316572, 267895715, 428633144, 535791430, 1071582860, 2143165720]

約数ペア:

[(1, 2143165720), (2, 1071582860), (4, 535791430), (5, 428633144), (8, 267895715), (10, 214316572), (20, 107158286), (40, 53579143), (79, 27128680), (158, 13564340), (316, 6782170), (395, 5425736), (632, 3391085), (790, 2712868), (1580, 1356434), (3160, 678217)]