20667136

素因数分解:

$2^8\times 7^1\times {\mathrm{19}}^1\times {\mathrm{607}}^1$

素因数の和:649

約数の個数: 72

約数和(自身を含む): 49710080

約数和(自身を除く): 29042944

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 56, 64, 76, 112, 128, 133, 152, 224, 256, 266, 304, 448, 532, 607, 608, 896, 1064, 1214, 1216, 1792, 2128, 2428, 2432, 4249, 4256, 4856, 4864, 8498, 8512, 9712, 11533, 16996, 17024, 19424, 23066, 33992, 34048, 38848, 46132, 67984, 77696, 80731, 92264, 135968, 155392, 161462, 184528, 271936, 322924, 369056, 543872, 645848, 738112, 1087744, 1291696, 1476224, 2583392, 2952448, 5166784, 10333568, 20667136]

約数ペア:

[(1, 20667136), (2, 10333568), (4, 5166784), (7, 2952448), (8, 2583392), (14, 1476224), (16, 1291696), (19, 1087744), (28, 738112), (32, 645848), (38, 543872), (56, 369056), (64, 322924), (76, 271936), (112, 184528), (128, 161462), (133, 155392), (152, 135968), (224, 92264), (256, 80731), (266, 77696), (304, 67984), (448, 46132), (532, 38848), (607, 34048), (608, 33992), (896, 23066), (1064, 19424), (1214, 17024), (1216, 16996), (1792, 11533), (2128, 9712), (2428, 8512), (2432, 8498), (4249, 4864), (4256, 4856)]