21332079

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{167}}^1$

素因数の和:281

約数の個数: 40

約数和(自身を含む): 34151040

約数和(自身を除く): 12818961

約数列:

[1, 3, 9, 19, 27, 57, 81, 83, 167, 171, 249, 501, 513, 747, 1503, 1539, 1577, 2241, 3173, 4509, 4731, 6723, 9519, 13527, 13861, 14193, 28557, 41583, 42579, 85671, 124749, 127737, 257013, 263359, 374247, 790077, 1122741, 2370231, 7110693, 21332079]

約数ペア:

[(1, 21332079), (3, 7110693), (9, 2370231), (19, 1122741), (27, 790077), (57, 374247), (81, 263359), (83, 257013), (167, 127737), (171, 124749), (249, 85671), (501, 42579), (513, 41583), (747, 28557), (1503, 14193), (1539, 13861), (1577, 13527), (2241, 9519), (3173, 6723), (4509, 4731)]