2161240

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{761}}^1$

素因数の和:843

約数の個数: 32

約数和(自身を含む): 4937760

約数和(自身を除く): 2776520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 761, 1420, 1522, 2840, 3044, 3805, 6088, 7610, 15220, 30440, 54031, 108062, 216124, 270155, 432248, 540310, 1080620, 2161240]

約数ペア:

[(1, 2161240), (2, 1080620), (4, 540310), (5, 432248), (8, 270155), (10, 216124), (20, 108062), (40, 54031), (71, 30440), (142, 15220), (284, 7610), (355, 6088), (568, 3805), (710, 3044), (761, 2840), (1420, 1522)]