20719820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1777}}^1$

素因数の和:1850

約数の個数: 48

約数和(自身を含む): 48390048

約数和(自身を除く): 27670228

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 53, 55, 106, 110, 212, 220, 265, 530, 583, 1060, 1166, 1777, 2332, 2915, 3554, 5830, 7108, 8885, 11660, 17770, 19547, 35540, 39094, 78188, 94181, 97735, 188362, 195470, 376724, 390940, 470905, 941810, 1035991, 1883620, 2071982, 4143964, 5179955, 10359910, 20719820]

約数ペア:

[(1, 20719820), (2, 10359910), (4, 5179955), (5, 4143964), (10, 2071982), (11, 1883620), (20, 1035991), (22, 941810), (44, 470905), (53, 390940), (55, 376724), (106, 195470), (110, 188362), (212, 97735), (220, 94181), (265, 78188), (530, 39094), (583, 35540), (1060, 19547), (1166, 17770), (1777, 11660), (2332, 8885), (2915, 7108), (3554, 5830)]