21122784

素因数分解:

$2^5\times 3^2\times {\mathrm{71}}^1\times {\mathrm{1033}}^1$

素因数の和:1120

約数の個数: 72

約数和(自身を含む): 60972912

約数和(自身を除く): 39850128

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 71, 72, 96, 142, 144, 213, 284, 288, 426, 568, 639, 852, 1033, 1136, 1278, 1704, 2066, 2272, 2556, 3099, 3408, 4132, 5112, 6198, 6816, 8264, 9297, 10224, 12396, 16528, 18594, 20448, 24792, 33056, 37188, 49584, 73343, 74376, 99168, 146686, 148752, 220029, 293372, 297504, 440058, 586744, 660087, 880116, 1173488, 1320174, 1760232, 2346976, 2640348, 3520464, 5280696, 7040928, 10561392, 21122784]

約数ペア:

[(1, 21122784), (2, 10561392), (3, 7040928), (4, 5280696), (6, 3520464), (8, 2640348), (9, 2346976), (12, 1760232), (16, 1320174), (18, 1173488), (24, 880116), (32, 660087), (36, 586744), (48, 440058), (71, 297504), (72, 293372), (96, 220029), (142, 148752), (144, 146686), (213, 99168), (284, 74376), (288, 73343), (426, 49584), (568, 37188), (639, 33056), (852, 24792), (1033, 20448), (1136, 18594), (1278, 16528), (1704, 12396), (2066, 10224), (2272, 9297), (2556, 8264), (3099, 6816), (3408, 6198), (4132, 5112)]