28293111

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{439}}^1$

素因数の和:497

約数の個数: 64

約数和(自身を含む): 54067200

約数和(自身を除く): 25774089

約数列:

[1, 3, 7, 9, 11, 21, 27, 31, 33, 63, 77, 93, 99, 189, 217, 231, 279, 297, 341, 439, 651, 693, 837, 1023, 1317, 1953, 2079, 2387, 3069, 3073, 3951, 4829, 5859, 7161, 9207, 9219, 11853, 13609, 14487, 21483, 27657, 33803, 40827, 43461, 64449, 82971, 95263, 101409, 122481, 130383, 149699, 285789, 304227, 367443, 449097, 857367, 912681, 1047893, 1347291, 2572101, 3143679, 4041873, 9431037, 28293111]

約数ペア:

[(1, 28293111), (3, 9431037), (7, 4041873), (9, 3143679), (11, 2572101), (21, 1347291), (27, 1047893), (31, 912681), (33, 857367), (63, 449097), (77, 367443), (93, 304227), (99, 285789), (189, 149699), (217, 130383), (231, 122481), (279, 101409), (297, 95263), (341, 82971), (439, 64449), (651, 43461), (693, 40827), (837, 33803), (1023, 27657), (1317, 21483), (1953, 14487), (2079, 13609), (2387, 11853), (3069, 9219), (3073, 9207), (3951, 7161), (4829, 5859)]