21771876

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{607}}^1$

素因数の和:689

約数の個数: 72

約数和(自身を含む): 60162816

約数和(自身を除く): 38390940

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 61, 84, 98, 122, 147, 183, 196, 244, 294, 366, 427, 588, 607, 732, 854, 1214, 1281, 1708, 1821, 2428, 2562, 2989, 3642, 4249, 5124, 5978, 7284, 8498, 8967, 11956, 12747, 16996, 17934, 25494, 29743, 35868, 37027, 50988, 59486, 74054, 89229, 111081, 118972, 148108, 178458, 222162, 259189, 356916, 444324, 518378, 777567, 1036756, 1555134, 1814323, 3110268, 3628646, 5442969, 7257292, 10885938, 21771876]

約数ペア:

[(1, 21771876), (2, 10885938), (3, 7257292), (4, 5442969), (6, 3628646), (7, 3110268), (12, 1814323), (14, 1555134), (21, 1036756), (28, 777567), (42, 518378), (49, 444324), (61, 356916), (84, 259189), (98, 222162), (122, 178458), (147, 148108), (183, 118972), (196, 111081), (244, 89229), (294, 74054), (366, 59486), (427, 50988), (588, 37027), (607, 35868), (732, 29743), (854, 25494), (1214, 17934), (1281, 16996), (1708, 12747), (1821, 11956), (2428, 8967), (2562, 8498), (2989, 7284), (3642, 5978), (4249, 5124)]