21000895545

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{1242289}}^1$

素因数の和:1242334

約数の個数: 48

約数和(自身を含む): 40786865280

約数和(自身を除く): 19785969735

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 49, 69, 105, 115, 147, 161, 245, 345, 483, 735, 805, 1127, 2415, 3381, 5635, 16905, 1242289, 3726867, 6211445, 8696023, 18634335, 26088069, 28572647, 43480115, 60872161, 85717941, 130440345, 142863235, 182616483, 200008529, 304360805, 428589705, 600025587, 913082415, 1000042645, 1400059703, 3000127935, 4200179109, 7000298515, 21000895545]

約数ペア:

[(1, 21000895545), (3, 7000298515), (5, 4200179109), (7, 3000127935), (15, 1400059703), (21, 1000042645), (23, 913082415), (35, 600025587), (49, 428589705), (69, 304360805), (105, 200008529), (115, 182616483), (147, 142863235), (161, 130440345), (245, 85717941), (345, 60872161), (483, 43480115), (735, 28572647), (805, 26088069), (1127, 18634335), (2415, 8696023), (3381, 6211445), (5635, 3726867), (16905, 1242289)]