21251256

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{68113}}^1$

素因数の和:68135

約数の個数: 32

約数和(自身を含む): 57215760

約数和(自身を除く): 35964504

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 68113, 136226, 204339, 272452, 408678, 544904, 817356, 885469, 1634712, 1770938, 2656407, 3541876, 5312814, 7083752, 10625628, 21251256]

約数ペア:

[(1, 21251256), (2, 10625628), (3, 7083752), (4, 5312814), (6, 3541876), (8, 2656407), (12, 1770938), (13, 1634712), (24, 885469), (26, 817356), (39, 544904), (52, 408678), (78, 272452), (104, 204339), (156, 136226), (312, 68113)]