21457520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{38317}}^1$

素因数の和:38337

約数の個数: 40

約数和(自身を含む): 57017184

約数和(自身を除く): 35559664

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 38317, 76634, 153268, 191585, 268219, 306536, 383170, 536438, 613072, 766340, 1072876, 1341095, 1532680, 2145752, 2682190, 3065360, 4291504, 5364380, 10728760, 21457520]

約数ペア:

[(1, 21457520), (2, 10728760), (4, 5364380), (5, 4291504), (7, 3065360), (8, 2682190), (10, 2145752), (14, 1532680), (16, 1341095), (20, 1072876), (28, 766340), (35, 613072), (40, 536438), (56, 383170), (70, 306536), (80, 268219), (112, 191585), (140, 153268), (280, 76634), (560, 38317)]