21000944776

素因数分解:

$2^3\times 7^1\times {\mathrm{79}}^1\times {\mathrm{163}}^1\times {\mathrm{29123}}^1$

素因数の和:29378

約数の個数: 64

約数和(自身を含む): 45852825600

約数和(自身を除く): 24851880824

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 79, 158, 163, 316, 326, 553, 632, 652, 1106, 1141, 1304, 2212, 2282, 4424, 4564, 9128, 12877, 25754, 29123, 51508, 58246, 90139, 103016, 116492, 180278, 203861, 232984, 360556, 407722, 721112, 815444, 1630888, 2300717, 4601434, 4747049, 9202868, 9494098, 16105019, 18405736, 18988196, 32210038, 33229343, 37976392, 64420076, 66458686, 128840152, 132917372, 265834744, 375016871, 750033742, 1500067484, 2625118097, 3000134968, 5250236194, 10500472388, 21000944776]

約数ペア:

[(1, 21000944776), (2, 10500472388), (4, 5250236194), (7, 3000134968), (8, 2625118097), (14, 1500067484), (28, 750033742), (56, 375016871), (79, 265834744), (158, 132917372), (163, 128840152), (316, 66458686), (326, 64420076), (553, 37976392), (632, 33229343), (652, 32210038), (1106, 18988196), (1141, 18405736), (1304, 16105019), (2212, 9494098), (2282, 9202868), (4424, 4747049), (4564, 4601434), (9128, 2300717), (12877, 1630888), (25754, 815444), (29123, 721112), (51508, 407722), (58246, 360556), (90139, 232984), (103016, 203861), (116492, 180278)]