21359943

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 35747712

約数和(自身を除く): 14387769

約数列:

[1, 3, 9, 11, 27, 33, 61, 81, 99, 131, 183, 243, 297, 393, 549, 671, 891, 1179, 1441, 1647, 2013, 2673, 3537, 4323, 4941, 6039, 7991, 10611, 12969, 14823, 18117, 23973, 31833, 38907, 54351, 71919, 87901, 116721, 163053, 215757, 263703, 350163, 647271, 791109, 1941813, 2373327, 7119981, 21359943]

約数ペア:

[(1, 21359943), (3, 7119981), (9, 2373327), (11, 1941813), (27, 791109), (33, 647271), (61, 350163), (81, 263703), (99, 215757), (131, 163053), (183, 116721), (243, 87901), (297, 71919), (393, 54351), (549, 38907), (671, 31833), (891, 23973), (1179, 18117), (1441, 14823), (1647, 12969), (2013, 10611), (2673, 7991), (3537, 6039), (4323, 4941)]