19711728

素因数分解:

$2^4\times 3^3\times {\mathrm{103}}^1\times {\mathrm{443}}^1$

素因数の和:563

約数の個数: 80

約数和(自身を含む): 57258240

約数和(自身を除く): 37546512

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 103, 108, 144, 206, 216, 309, 412, 432, 443, 618, 824, 886, 927, 1236, 1329, 1648, 1772, 1854, 2472, 2658, 2781, 3544, 3708, 3987, 4944, 5316, 5562, 7088, 7416, 7974, 10632, 11124, 11961, 14832, 15948, 21264, 22248, 23922, 31896, 44496, 45629, 47844, 63792, 91258, 95688, 136887, 182516, 191376, 273774, 365032, 410661, 547548, 730064, 821322, 1095096, 1231983, 1642644, 2190192, 2463966, 3285288, 4927932, 6570576, 9855864, 19711728]

約数ペア:

[(1, 19711728), (2, 9855864), (3, 6570576), (4, 4927932), (6, 3285288), (8, 2463966), (9, 2190192), (12, 1642644), (16, 1231983), (18, 1095096), (24, 821322), (27, 730064), (36, 547548), (48, 410661), (54, 365032), (72, 273774), (103, 191376), (108, 182516), (144, 136887), (206, 95688), (216, 91258), (309, 63792), (412, 47844), (432, 45629), (443, 44496), (618, 31896), (824, 23922), (886, 22248), (927, 21264), (1236, 15948), (1329, 14832), (1648, 11961), (1772, 11124), (1854, 10632), (2472, 7974), (2658, 7416), (2781, 7088), (3544, 5562), (3708, 5316), (3987, 4944)]