21805280

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{19469}}^1$

素因数の和:19491

約数の個数: 48

約数和(自身を含む): 58877280

約数和(自身を除く): 37072000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 19469, 38938, 77876, 97345, 136283, 155752, 194690, 272566, 311504, 389380, 545132, 623008, 681415, 778760, 1090264, 1362830, 1557520, 2180528, 2725660, 3115040, 4361056, 5451320, 10902640, 21805280]

約数ペア:

[(1, 21805280), (2, 10902640), (4, 5451320), (5, 4361056), (7, 3115040), (8, 2725660), (10, 2180528), (14, 1557520), (16, 1362830), (20, 1090264), (28, 778760), (32, 681415), (35, 623008), (40, 545132), (56, 389380), (70, 311504), (80, 272566), (112, 194690), (140, 155752), (160, 136283), (224, 97345), (280, 77876), (560, 38938), (1120, 19469)]