21331376

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{6379}}^1$

素因数の和:6417

約数の個数: 40

約数和(自身を含む): 47467200

約数和(自身を除く): 26135824

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 38, 44, 76, 88, 152, 176, 209, 304, 418, 836, 1672, 3344, 6379, 12758, 25516, 51032, 70169, 102064, 121201, 140338, 242402, 280676, 484804, 561352, 969608, 1122704, 1333211, 1939216, 2666422, 5332844, 10665688, 21331376]

約数ペア:

[(1, 21331376), (2, 10665688), (4, 5332844), (8, 2666422), (11, 1939216), (16, 1333211), (19, 1122704), (22, 969608), (38, 561352), (44, 484804), (76, 280676), (88, 242402), (152, 140338), (176, 121201), (209, 102064), (304, 70169), (418, 51032), (836, 25516), (1672, 12758), (3344, 6379)]