21078162

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1277}}^1$

素因数の和:1423

約数の個数: 48

約数和(自身を含む): 52633152

約数和(自身を除く): 31554990

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 131, 262, 393, 786, 917, 1179, 1277, 1834, 2358, 2554, 2751, 3831, 5502, 7662, 8253, 8939, 11493, 16506, 17878, 22986, 26817, 53634, 80451, 160902, 167287, 334574, 501861, 1003722, 1171009, 1505583, 2342018, 3011166, 3513027, 7026054, 10539081, 21078162]

約数ペア:

[(1, 21078162), (2, 10539081), (3, 7026054), (6, 3513027), (7, 3011166), (9, 2342018), (14, 1505583), (18, 1171009), (21, 1003722), (42, 501861), (63, 334574), (126, 167287), (131, 160902), (262, 80451), (393, 53634), (786, 26817), (917, 22986), (1179, 17878), (1277, 16506), (1834, 11493), (2358, 8939), (2554, 8253), (2751, 7662), (3831, 5502)]