21000739221

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{467}}^1\times {\mathrm{64891}}^1$

素因数の和:65382

約数の個数: 48

約数和(自身を含む): 37901081088

約数和(自身を除く): 16900341867

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 467, 693, 1401, 3269, 4203, 5137, 9807, 15411, 29421, 35959, 46233, 64891, 107877, 194673, 323631, 454237, 584019, 713801, 1362711, 2141403, 4088133, 4996607, 6424209, 14989821, 30304097, 44969463, 90912291, 212128679, 272736873, 333345067, 636386037, 1000035201, 1909158111, 2333415469, 3000105603, 7000246407, 21000739221]

約数ペア:

[(1, 21000739221), (3, 7000246407), (7, 3000105603), (9, 2333415469), (11, 1909158111), (21, 1000035201), (33, 636386037), (63, 333345067), (77, 272736873), (99, 212128679), (231, 90912291), (467, 44969463), (693, 30304097), (1401, 14989821), (3269, 6424209), (4203, 4996607), (5137, 4088133), (9807, 2141403), (15411, 1362711), (29421, 713801), (35959, 584019), (46233, 454237), (64891, 323631), (107877, 194673)]