18219663

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{431}}^1$

素因数の和:516

約数の個数: 48

約数和(自身を含む): 33426432

約数和(自身を除く): 15206769

約数列:

[1, 3, 7, 9, 11, 21, 33, 61, 63, 77, 99, 183, 231, 427, 431, 549, 671, 693, 1281, 1293, 2013, 3017, 3843, 3879, 4697, 4741, 6039, 9051, 14091, 14223, 26291, 27153, 33187, 42273, 42669, 78873, 99561, 184037, 236619, 289201, 298683, 552111, 867603, 1656333, 2024407, 2602809, 6073221, 18219663]

約数ペア:

[(1, 18219663), (3, 6073221), (7, 2602809), (9, 2024407), (11, 1656333), (21, 867603), (33, 552111), (61, 298683), (63, 289201), (77, 236619), (99, 184037), (183, 99561), (231, 78873), (427, 42669), (431, 42273), (549, 33187), (671, 27153), (693, 26291), (1281, 14223), (1293, 14091), (2013, 9051), (3017, 6039), (3843, 4741), (3879, 4697)]