21101920

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{227}}^1$

素因数の和:332

約数の個数: 96

約数和(自身を含む): 57915648

約数和(自身を除く): 36813728

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 83, 112, 140, 160, 166, 224, 227, 280, 332, 415, 454, 560, 581, 664, 830, 908, 1120, 1135, 1162, 1328, 1589, 1660, 1816, 2270, 2324, 2656, 2905, 3178, 3320, 3632, 4540, 4648, 5810, 6356, 6640, 7264, 7945, 9080, 9296, 11620, 12712, 13280, 15890, 18160, 18592, 18841, 23240, 25424, 31780, 36320, 37682, 46480, 50848, 63560, 75364, 92960, 94205, 127120, 131887, 150728, 188410, 254240, 263774, 301456, 376820, 527548, 602912, 659435, 753640, 1055096, 1318870, 1507280, 2110192, 2637740, 3014560, 4220384, 5275480, 10550960, 21101920]

約数ペア:

[(1, 21101920), (2, 10550960), (4, 5275480), (5, 4220384), (7, 3014560), (8, 2637740), (10, 2110192), (14, 1507280), (16, 1318870), (20, 1055096), (28, 753640), (32, 659435), (35, 602912), (40, 527548), (56, 376820), (70, 301456), (80, 263774), (83, 254240), (112, 188410), (140, 150728), (160, 131887), (166, 127120), (224, 94205), (227, 92960), (280, 75364), (332, 63560), (415, 50848), (454, 46480), (560, 37682), (581, 36320), (664, 31780), (830, 25424), (908, 23240), (1120, 18841), (1135, 18592), (1162, 18160), (1328, 15890), (1589, 13280), (1660, 12712), (1816, 11620), (2270, 9296), (2324, 9080), (2656, 7945), (2905, 7264), (3178, 6640), (3320, 6356), (3632, 5810), (4540, 4648)]