20721744

素因数分解:

$2^4\times 3^4\times {\mathrm{59}}^1\times {\mathrm{271}}^1$

素因数の和:350

約数の個数: 100

約数和(自身を含む): 61216320

約数和(自身を除く): 40494576

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 59, 72, 81, 108, 118, 144, 162, 177, 216, 236, 271, 324, 354, 432, 472, 531, 542, 648, 708, 813, 944, 1062, 1084, 1296, 1416, 1593, 1626, 2124, 2168, 2439, 2832, 3186, 3252, 4248, 4336, 4779, 4878, 6372, 6504, 7317, 8496, 9558, 9756, 12744, 13008, 14634, 15989, 19116, 19512, 21951, 25488, 29268, 31978, 38232, 39024, 43902, 47967, 58536, 63956, 76464, 87804, 95934, 117072, 127912, 143901, 175608, 191868, 255824, 287802, 351216, 383736, 431703, 575604, 767472, 863406, 1151208, 1295109, 1726812, 2302416, 2590218, 3453624, 5180436, 6907248, 10360872, 20721744]

約数ペア:

[(1, 20721744), (2, 10360872), (3, 6907248), (4, 5180436), (6, 3453624), (8, 2590218), (9, 2302416), (12, 1726812), (16, 1295109), (18, 1151208), (24, 863406), (27, 767472), (36, 575604), (48, 431703), (54, 383736), (59, 351216), (72, 287802), (81, 255824), (108, 191868), (118, 175608), (144, 143901), (162, 127912), (177, 117072), (216, 95934), (236, 87804), (271, 76464), (324, 63956), (354, 58536), (432, 47967), (472, 43902), (531, 39024), (542, 38232), (648, 31978), (708, 29268), (813, 25488), (944, 21951), (1062, 19512), (1084, 19116), (1296, 15989), (1416, 14634), (1593, 13008), (1626, 12744), (2124, 9756), (2168, 9558), (2439, 8496), (2832, 7317), (3186, 6504), (3252, 6372), (4248, 4878), (4336, 4779)]