21088000

素因数分解:

$2^8\times 5^3\times {\mathrm{659}}^1$

素因数の和:690

約数の個数: 72

約数和(自身を含む): 52612560

約数和(自身を除く): 31524560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 256, 320, 400, 500, 640, 659, 800, 1000, 1280, 1318, 1600, 2000, 2636, 3200, 3295, 4000, 5272, 6400, 6590, 8000, 10544, 13180, 16000, 16475, 21088, 26360, 32000, 32950, 42176, 52720, 65900, 82375, 84352, 105440, 131800, 164750, 168704, 210880, 263600, 329500, 421760, 527200, 659000, 843520, 1054400, 1318000, 2108800, 2636000, 4217600, 5272000, 10544000, 21088000]

約数ペア:

[(1, 21088000), (2, 10544000), (4, 5272000), (5, 4217600), (8, 2636000), (10, 2108800), (16, 1318000), (20, 1054400), (25, 843520), (32, 659000), (40, 527200), (50, 421760), (64, 329500), (80, 263600), (100, 210880), (125, 168704), (128, 164750), (160, 131800), (200, 105440), (250, 84352), (256, 82375), (320, 65900), (400, 52720), (500, 42176), (640, 32950), (659, 32000), (800, 26360), (1000, 21088), (1280, 16475), (1318, 16000), (1600, 13180), (2000, 10544), (2636, 8000), (3200, 6590), (3295, 6400), (4000, 5272)]