21060820864

素因数分解:

$2^7\times {\mathrm{19}}^2\times {\mathrm{455783}}^1$

素因数の和:455835

約数の個数: 48

約数和(自身を含む): 44281694520

約数和(自身を除く): 23220873656

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 128, 152, 304, 361, 608, 722, 1216, 1444, 2432, 2888, 5776, 11552, 23104, 46208, 455783, 911566, 1823132, 3646264, 7292528, 8659877, 14585056, 17319754, 29170112, 34639508, 58340224, 69279016, 138558032, 164537663, 277116064, 329075326, 554232128, 658150652, 1108464256, 1316301304, 2632602608, 5265205216, 10530410432, 21060820864]

約数ペア:

[(1, 21060820864), (2, 10530410432), (4, 5265205216), (8, 2632602608), (16, 1316301304), (19, 1108464256), (32, 658150652), (38, 554232128), (64, 329075326), (76, 277116064), (128, 164537663), (152, 138558032), (304, 69279016), (361, 58340224), (608, 34639508), (722, 29170112), (1216, 17319754), (1444, 14585056), (2432, 8659877), (2888, 7292528), (5776, 3646264), (11552, 1823132), (23104, 911566), (46208, 455783)]