21021968

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{3853}}^1$

素因数の和:3903

約数の個数: 40

約数和(自身を含む): 45878016

約数和(自身を除く): 24856048

約数列:

[1, 2, 4, 8, 11, 16, 22, 31, 44, 62, 88, 124, 176, 248, 341, 496, 682, 1364, 2728, 3853, 5456, 7706, 15412, 30824, 42383, 61648, 84766, 119443, 169532, 238886, 339064, 477772, 678128, 955544, 1313873, 1911088, 2627746, 5255492, 10510984, 21021968]

約数ペア:

[(1, 21021968), (2, 10510984), (4, 5255492), (8, 2627746), (11, 1911088), (16, 1313873), (22, 955544), (31, 678128), (44, 477772), (62, 339064), (88, 238886), (124, 169532), (176, 119443), (248, 84766), (341, 61648), (496, 42383), (682, 30824), (1364, 15412), (2728, 7706), (3853, 5456)]