21265440

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{6329}}^1$

素因数の和:6354

約数の個数: 96

約数和(自身を含む): 76567680

約数和(自身を除く): 55302240

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 70, 80, 84, 96, 105, 112, 120, 140, 160, 168, 210, 224, 240, 280, 336, 420, 480, 560, 672, 840, 1120, 1680, 3360, 6329, 12658, 18987, 25316, 31645, 37974, 44303, 50632, 63290, 75948, 88606, 94935, 101264, 126580, 132909, 151896, 177212, 189870, 202528, 221515, 253160, 265818, 303792, 354424, 379740, 443030, 506320, 531636, 607584, 664545, 708848, 759480, 886060, 1012640, 1063272, 1329090, 1417696, 1518960, 1772120, 2126544, 2658180, 3037920, 3544240, 4253088, 5316360, 7088480, 10632720, 21265440]

約数ペア:

[(1, 21265440), (2, 10632720), (3, 7088480), (4, 5316360), (5, 4253088), (6, 3544240), (7, 3037920), (8, 2658180), (10, 2126544), (12, 1772120), (14, 1518960), (15, 1417696), (16, 1329090), (20, 1063272), (21, 1012640), (24, 886060), (28, 759480), (30, 708848), (32, 664545), (35, 607584), (40, 531636), (42, 506320), (48, 443030), (56, 379740), (60, 354424), (70, 303792), (80, 265818), (84, 253160), (96, 221515), (105, 202528), (112, 189870), (120, 177212), (140, 151896), (160, 132909), (168, 126580), (210, 101264), (224, 94935), (240, 88606), (280, 75948), (336, 63290), (420, 50632), (480, 44303), (560, 37974), (672, 31645), (840, 25316), (1120, 18987), (1680, 12658), (3360, 6329)]