20901103640

素因数分解:

$2^3\times 5^1\times {\mathrm{431}}^1\times {\mathrm{1212361}}^1$

素因数の和:1212803

約数の個数: 32

約数和(自身を含む): 47136634560

約数和(自身を除く): 26235530920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 431, 862, 1724, 2155, 3448, 4310, 8620, 17240, 1212361, 2424722, 4849444, 6061805, 9698888, 12123610, 24247220, 48494440, 522527591, 1045055182, 2090110364, 2612637955, 4180220728, 5225275910, 10450551820, 20901103640]

約数ペア:

[(1, 20901103640), (2, 10450551820), (4, 5225275910), (5, 4180220728), (8, 2612637955), (10, 2090110364), (20, 1045055182), (40, 522527591), (431, 48494440), (862, 24247220), (1724, 12123610), (2155, 9698888), (3448, 6061805), (4310, 4849444), (8620, 2424722), (17240, 1212361)]