7143220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:257

約数の個数: 72

約数和(自身を含む): 18012456

約数和(自身を除く): 10869236

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 49, 70, 74, 98, 140, 148, 185, 196, 197, 245, 259, 370, 394, 490, 518, 740, 788, 980, 985, 1036, 1295, 1379, 1813, 1970, 2590, 2758, 3626, 3940, 5180, 5516, 6895, 7252, 7289, 9065, 9653, 13790, 14578, 18130, 19306, 27580, 29156, 36260, 36445, 38612, 48265, 51023, 72890, 96530, 102046, 145780, 193060, 204092, 255115, 357161, 510230, 714322, 1020460, 1428644, 1785805, 3571610, 7143220]

約数ペア:

[(1, 7143220), (2, 3571610), (4, 1785805), (5, 1428644), (7, 1020460), (10, 714322), (14, 510230), (20, 357161), (28, 255115), (35, 204092), (37, 193060), (49, 145780), (70, 102046), (74, 96530), (98, 72890), (140, 51023), (148, 48265), (185, 38612), (196, 36445), (197, 36260), (245, 29156), (259, 27580), (370, 19306), (394, 18130), (490, 14578), (518, 13790), (740, 9653), (788, 9065), (980, 7289), (985, 7252), (1036, 6895), (1295, 5516), (1379, 5180), (1813, 3940), (1970, 3626), (2590, 2758)]