21000978339

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{421}}^1\times {\mathrm{88919}}^1$

素因数の和:89371

約数の個数: 32

約数和(自身を含む): 32420943360

約数和(自身を除く): 11419965021

約数列:

[1, 3, 11, 17, 33, 51, 187, 421, 561, 1263, 4631, 7157, 13893, 21471, 78727, 88919, 236181, 266757, 978109, 1511623, 2934327, 4534869, 16627853, 37434899, 49883559, 112304697, 411783889, 636393283, 1235351667, 1909179849, 7000326113, 21000978339]

約数ペア:

[(1, 21000978339), (3, 7000326113), (11, 1909179849), (17, 1235351667), (33, 636393283), (51, 411783889), (187, 112304697), (421, 49883559), (561, 37434899), (1263, 16627853), (4631, 4534869), (7157, 2934327), (13893, 1511623), (21471, 978109), (78727, 266757), (88919, 236181)]