81404180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{28463}}^1$

素因数の和:28496

約数の個数: 48

約数和(自身を含む): 200841984

約数和(自身を除く): 119437804

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 28463, 56926, 113852, 142315, 284630, 313093, 370019, 569260, 626186, 740038, 1252372, 1480076, 1565465, 1850095, 3130930, 3700190, 4070209, 6261860, 7400380, 8140418, 16280836, 20351045, 40702090, 81404180]

約数ペア:

[(1, 81404180), (2, 40702090), (4, 20351045), (5, 16280836), (10, 8140418), (11, 7400380), (13, 6261860), (20, 4070209), (22, 3700190), (26, 3130930), (44, 1850095), (52, 1565465), (55, 1480076), (65, 1252372), (110, 740038), (130, 626186), (143, 569260), (220, 370019), (260, 313093), (286, 284630), (572, 142315), (715, 113852), (1430, 56926), (2860, 28463)]