20827520

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{4649}}^1$

素因数の和:4675

約数の個数: 64

約数和(自身を含む): 56916000

約数和(自身を除く): 36088480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 280, 320, 448, 560, 640, 896, 1120, 2240, 4480, 4649, 9298, 18596, 23245, 32543, 37192, 46490, 65086, 74384, 92980, 130172, 148768, 162715, 185960, 260344, 297536, 325430, 371920, 520688, 595072, 650860, 743840, 1041376, 1301720, 1487680, 2082752, 2603440, 2975360, 4165504, 5206880, 10413760, 20827520]

約数ペア:

[(1, 20827520), (2, 10413760), (4, 5206880), (5, 4165504), (7, 2975360), (8, 2603440), (10, 2082752), (14, 1487680), (16, 1301720), (20, 1041376), (28, 743840), (32, 650860), (35, 595072), (40, 520688), (56, 371920), (64, 325430), (70, 297536), (80, 260344), (112, 185960), (128, 162715), (140, 148768), (160, 130172), (224, 92980), (280, 74384), (320, 65086), (448, 46490), (560, 37192), (640, 32543), (896, 23245), (1120, 18596), (2240, 9298), (4480, 4649)]