20565821380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{409841}}^1$

素因数の和:410056

約数の個数: 48

約数和(自身を含む): 46751496624

約数和(自身を除く): 26185675244

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 193, 260, 386, 772, 965, 1930, 2509, 3860, 5018, 10036, 12545, 25090, 50180, 409841, 819682, 1639364, 2049205, 4098410, 5327933, 8196820, 10655866, 21311732, 26639665, 53279330, 79099313, 106558660, 158198626, 316397252, 395496565, 790993130, 1028291069, 1581986260, 2056582138, 4113164276, 5141455345, 10282910690, 20565821380]

約数ペア:

[(1, 20565821380), (2, 10282910690), (4, 5141455345), (5, 4113164276), (10, 2056582138), (13, 1581986260), (20, 1028291069), (26, 790993130), (52, 395496565), (65, 316397252), (130, 158198626), (193, 106558660), (260, 79099313), (386, 53279330), (772, 26639665), (965, 21311732), (1930, 10655866), (2509, 8196820), (3860, 5327933), (5018, 4098410), (10036, 2049205), (12545, 1639364), (25090, 819682), (50180, 409841)]