21306816

素因数分解:

$2^6\times 3^2\times {\mathrm{71}}^1\times {\mathrm{521}}^1$

素因数の和:610

約数の個数: 84

約数和(自身を含む): 62051184

約数和(自身を除く): 40744368

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 64, 71, 72, 96, 142, 144, 192, 213, 284, 288, 426, 521, 568, 576, 639, 852, 1042, 1136, 1278, 1563, 1704, 2084, 2272, 2556, 3126, 3408, 4168, 4544, 4689, 5112, 6252, 6816, 8336, 9378, 10224, 12504, 13632, 16672, 18756, 20448, 25008, 33344, 36991, 37512, 40896, 50016, 73982, 75024, 100032, 110973, 147964, 150048, 221946, 295928, 300096, 332919, 443892, 591856, 665838, 887784, 1183712, 1331676, 1775568, 2367424, 2663352, 3551136, 5326704, 7102272, 10653408, 21306816]

約数ペア:

[(1, 21306816), (2, 10653408), (3, 7102272), (4, 5326704), (6, 3551136), (8, 2663352), (9, 2367424), (12, 1775568), (16, 1331676), (18, 1183712), (24, 887784), (32, 665838), (36, 591856), (48, 443892), (64, 332919), (71, 300096), (72, 295928), (96, 221946), (142, 150048), (144, 147964), (192, 110973), (213, 100032), (284, 75024), (288, 73982), (426, 50016), (521, 40896), (568, 37512), (576, 36991), (639, 33344), (852, 25008), (1042, 20448), (1136, 18756), (1278, 16672), (1563, 13632), (1704, 12504), (2084, 10224), (2272, 9378), (2556, 8336), (3126, 6816), (3408, 6252), (4168, 5112), (4544, 4689)]