20432840

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2593}}^1$

素因数の和:2801

約数の個数: 32

約数和(自身を含む): 46225080

約数和(自身を除く): 25792240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 2593, 3940, 5186, 7880, 10372, 12965, 20744, 25930, 51860, 103720, 510821, 1021642, 2043284, 2554105, 4086568, 5108210, 10216420, 20432840]

約数ペア:

[(1, 20432840), (2, 10216420), (4, 5108210), (5, 4086568), (8, 2554105), (10, 2043284), (20, 1021642), (40, 510821), (197, 103720), (394, 51860), (788, 25930), (985, 20744), (1576, 12965), (1970, 10372), (2593, 7880), (3940, 5186)]