21000391665

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{587}}^1\times {\mathrm{4091}}^1$

素因数の和:4750

約数の個数: 64

約数和(自身を含む): 37419604992

約数和(自身を除く): 16419213327

約数列:

[1, 3, 5, 11, 15, 33, 53, 55, 159, 165, 265, 583, 587, 795, 1749, 1761, 2915, 2935, 4091, 6457, 8745, 8805, 12273, 19371, 20455, 31111, 32285, 45001, 61365, 93333, 96855, 135003, 155555, 216823, 225005, 342221, 466665, 650469, 675015, 1026663, 1084115, 1711105, 2385053, 2401417, 3252345, 5133315, 7155159, 7204251, 11925265, 12007085, 26415587, 35775795, 36021255, 79246761, 127275101, 132077935, 381825303, 396233805, 636375505, 1400026111, 1909126515, 4200078333, 7000130555, 21000391665]

約数ペア:

[(1, 21000391665), (3, 7000130555), (5, 4200078333), (11, 1909126515), (15, 1400026111), (33, 636375505), (53, 396233805), (55, 381825303), (159, 132077935), (165, 127275101), (265, 79246761), (583, 36021255), (587, 35775795), (795, 26415587), (1749, 12007085), (1761, 11925265), (2915, 7204251), (2935, 7155159), (4091, 5133315), (6457, 3252345), (8745, 2401417), (8805, 2385053), (12273, 1711105), (19371, 1084115), (20455, 1026663), (31111, 675015), (32285, 650469), (45001, 466665), (61365, 342221), (93333, 225005), (96855, 216823), (135003, 155555)]