21239148

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{881}}^1$

素因数の和:943

約数の個数: 72

約数和(自身を含む): 59122224

約数和(自身を除く): 37883076

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 41, 42, 49, 82, 84, 98, 123, 147, 164, 196, 246, 287, 294, 492, 574, 588, 861, 881, 1148, 1722, 1762, 2009, 2643, 3444, 3524, 4018, 5286, 6027, 6167, 8036, 10572, 12054, 12334, 18501, 24108, 24668, 36121, 37002, 43169, 72242, 74004, 86338, 108363, 129507, 144484, 172676, 216726, 252847, 259014, 433452, 505694, 518028, 758541, 1011388, 1517082, 1769929, 3034164, 3539858, 5309787, 7079716, 10619574, 21239148]

約数ペア:

[(1, 21239148), (2, 10619574), (3, 7079716), (4, 5309787), (6, 3539858), (7, 3034164), (12, 1769929), (14, 1517082), (21, 1011388), (28, 758541), (41, 518028), (42, 505694), (49, 433452), (82, 259014), (84, 252847), (98, 216726), (123, 172676), (147, 144484), (164, 129507), (196, 108363), (246, 86338), (287, 74004), (294, 72242), (492, 43169), (574, 37002), (588, 36121), (861, 24668), (881, 24108), (1148, 18501), (1722, 12334), (1762, 12054), (2009, 10572), (2643, 8036), (3444, 6167), (3524, 6027), (4018, 5286)]