20899190

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{373}}^1\times {\mathrm{431}}^1$

素因数の和:824

約数の個数: 32

約数和(自身を含む): 40715136

約数和(自身を除く): 19815946

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 373, 431, 746, 862, 1865, 2155, 3730, 4310, 4849, 5603, 9698, 11206, 24245, 28015, 48490, 56030, 160763, 321526, 803815, 1607630, 2089919, 4179838, 10449595, 20899190]

約数ペア:

[(1, 20899190), (2, 10449595), (5, 4179838), (10, 2089919), (13, 1607630), (26, 803815), (65, 321526), (130, 160763), (373, 56030), (431, 48490), (746, 28015), (862, 24245), (1865, 11206), (2155, 9698), (3730, 5603), (4310, 4849)]