21678867

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{6037}}^1$

素因数の和:6072

約数の個数: 32

約数和(自身を含む): 38643200

約数和(自身を除く): 16964333

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 133, 171, 189, 399, 513, 1197, 3591, 6037, 18111, 42259, 54333, 114703, 126777, 162999, 344109, 380331, 802921, 1032327, 1140993, 2408763, 3096981, 7226289, 21678867]

約数ペア:

[(1, 21678867), (3, 7226289), (7, 3096981), (9, 2408763), (19, 1140993), (21, 1032327), (27, 802921), (57, 380331), (63, 344109), (133, 162999), (171, 126777), (189, 114703), (399, 54333), (513, 42259), (1197, 18111), (3591, 6037)]