21637720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41611}}^1$

素因数の和:41635

約数の個数: 32

約数和(自身を含む): 52431120

約数和(自身を除く): 30793400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 41611, 83222, 166444, 208055, 332888, 416110, 540943, 832220, 1081886, 1664440, 2163772, 2704715, 4327544, 5409430, 10818860, 21637720]

約数ペア:

[(1, 21637720), (2, 10818860), (4, 5409430), (5, 4327544), (8, 2704715), (10, 2163772), (13, 1664440), (20, 1081886), (26, 832220), (40, 540943), (52, 416110), (65, 332888), (104, 208055), (130, 166444), (260, 83222), (520, 41611)]