20531840

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{4583}}^1$

素因数の和:4609

約数の個数: 64

約数和(自身を含む): 56108160

約数和(自身を除く): 35576320

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, 4583, 9166, 18332, 22915, 32081, 36664, 45830, 64162, 73328, 91660, 128324, 146656, 160405, 183320, 256648, 293312, 320810, 366640, 513296, 586624, 641620, 733280, 1026592, 1283240, 1466560, 2053184, 2566480, 2933120, 4106368, 5132960, 10265920, 20531840]

約数ペア:

[(1, 20531840), (2, 10265920), (4, 5132960), (5, 4106368), (7, 2933120), (8, 2566480), (10, 2053184), (14, 1466560), (16, 1283240), (20, 1026592), (28, 733280), (32, 641620), (35, 586624), (40, 513296), (56, 366640), (64, 320810), (70, 293312), (80, 256648), (112, 183320), (128, 160405), (140, 146656), (160, 128324), (224, 91660), (280, 73328), (320, 64162), (448, 45830), (560, 36664), (640, 32081), (896, 22915), (1120, 18332), (2240, 9166), (4480, 4583)]