21076617891

素因数分解:

$3^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{379}}^1\times {\mathrm{9227}}^1$

素因数の和:9664

約数の個数: 48

約数和(自身を含む): 33579584640

約数和(自身を除く): 12502966749

約数列:

[1, 3, 7, 21, 41, 49, 123, 147, 287, 379, 861, 1137, 2009, 2653, 6027, 7959, 9227, 15539, 18571, 27681, 46617, 55713, 64589, 108773, 193767, 326319, 378307, 452123, 761411, 1134921, 1356369, 2284233, 2648149, 3497033, 7944447, 10491099, 18537043, 24479231, 55611129, 73437693, 143378353, 171354617, 430135059, 514063851, 1003648471, 3010945413, 7025539297, 21076617891]

約数ペア:

[(1, 21076617891), (3, 7025539297), (7, 3010945413), (21, 1003648471), (41, 514063851), (49, 430135059), (123, 171354617), (147, 143378353), (287, 73437693), (379, 55611129), (861, 24479231), (1137, 18537043), (2009, 10491099), (2653, 7944447), (6027, 3497033), (7959, 2648149), (9227, 2284233), (15539, 1356369), (18571, 1134921), (27681, 761411), (46617, 452123), (55713, 378307), (64589, 326319), (108773, 193767)]