20797660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1951}}^1$

素因数の和:2014

約数の個数: 48

約数和(自身を含む): 48206592

約数和(自身を除く): 27408932

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 52, 65, 82, 130, 164, 205, 260, 410, 533, 820, 1066, 1951, 2132, 2665, 3902, 5330, 7804, 9755, 10660, 19510, 25363, 39020, 50726, 79991, 101452, 126815, 159982, 253630, 319964, 399955, 507260, 799910, 1039883, 1599820, 2079766, 4159532, 5199415, 10398830, 20797660]

約数ペア:

[(1, 20797660), (2, 10398830), (4, 5199415), (5, 4159532), (10, 2079766), (13, 1599820), (20, 1039883), (26, 799910), (41, 507260), (52, 399955), (65, 319964), (82, 253630), (130, 159982), (164, 126815), (205, 101452), (260, 79991), (410, 50726), (533, 39020), (820, 25363), (1066, 19510), (1951, 10660), (2132, 9755), (2665, 7804), (3902, 5330)]