21547580

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{383}}^1$

素因数の和:518

約数の個数: 48

約数和(自身を含む): 47416320

約数和(自身を除く): 25868740

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 97, 116, 145, 194, 290, 383, 388, 485, 580, 766, 970, 1532, 1915, 1940, 2813, 3830, 5626, 7660, 11107, 11252, 14065, 22214, 28130, 37151, 44428, 55535, 56260, 74302, 111070, 148604, 185755, 222140, 371510, 743020, 1077379, 2154758, 4309516, 5386895, 10773790, 21547580]

約数ペア:

[(1, 21547580), (2, 10773790), (4, 5386895), (5, 4309516), (10, 2154758), (20, 1077379), (29, 743020), (58, 371510), (97, 222140), (116, 185755), (145, 148604), (194, 111070), (290, 74302), (383, 56260), (388, 55535), (485, 44428), (580, 37151), (766, 28130), (970, 22214), (1532, 14065), (1915, 11252), (1940, 11107), (2813, 7660), (3830, 5626)]