21709428

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{439}}^1$

素因数の和:776

約数の個数: 48

約数和(自身を含む): 54848640

約数和(自身を除く): 33139212

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 317, 439, 634, 878, 951, 1268, 1317, 1756, 1902, 2634, 3804, 4121, 5268, 5707, 8242, 11414, 12363, 16484, 17121, 22828, 24726, 34242, 49452, 68484, 139163, 278326, 417489, 556652, 834978, 1669956, 1809119, 3618238, 5427357, 7236476, 10854714, 21709428]

約数ペア:

[(1, 21709428), (2, 10854714), (3, 7236476), (4, 5427357), (6, 3618238), (12, 1809119), (13, 1669956), (26, 834978), (39, 556652), (52, 417489), (78, 278326), (156, 139163), (317, 68484), (439, 49452), (634, 34242), (878, 24726), (951, 22828), (1268, 17121), (1317, 16484), (1756, 12363), (1902, 11414), (2634, 8242), (3804, 5707), (4121, 5268)]