21985803

素因数分解:

$3^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1907}}^1$

素因数の和:1984

約数の個数: 32

約数和(自身を含む): 37854720

約数和(自身を除く): 15868917

約数列:

[1, 3, 7, 9, 21, 27, 61, 63, 183, 189, 427, 549, 1281, 1647, 1907, 3843, 5721, 11529, 13349, 17163, 40047, 51489, 116327, 120141, 348981, 360423, 814289, 1046943, 2442867, 3140829, 7328601, 21985803]

約数ペア:

[(1, 21985803), (3, 7328601), (7, 3140829), (9, 2442867), (21, 1046943), (27, 814289), (61, 360423), (63, 348981), (183, 120141), (189, 116327), (427, 51489), (549, 40047), (1281, 17163), (1647, 13349), (1907, 11529), (3843, 5721)]