21490216

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{12853}}^1$

素因数の和:12889

約数の個数: 32

約数和(自身を含む): 46274400

約数和(自身を除く): 24784184

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 76, 88, 152, 209, 418, 836, 1672, 12853, 25706, 51412, 102824, 141383, 244207, 282766, 488414, 565532, 976828, 1131064, 1953656, 2686277, 5372554, 10745108, 21490216]

約数ペア:

[(1, 21490216), (2, 10745108), (4, 5372554), (8, 2686277), (11, 1953656), (19, 1131064), (22, 976828), (38, 565532), (44, 488414), (76, 282766), (88, 244207), (152, 141383), (209, 102824), (418, 51412), (836, 25706), (1672, 12853)]