21454020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17027}}^1$

素因数の和:17049

約数の個数: 72

約数和(自身を含む): 74378304

約数和(自身を除く): 52924284

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 17027, 34054, 51081, 68108, 85135, 102162, 119189, 153243, 170270, 204324, 238378, 255405, 306486, 340540, 357567, 476756, 510810, 595945, 612972, 715134, 766215, 1021620, 1072701, 1191890, 1430268, 1532430, 1787835, 2145402, 2383780, 3064860, 3575670, 4290804, 5363505, 7151340, 10727010, 21454020]

約数ペア:

[(1, 21454020), (2, 10727010), (3, 7151340), (4, 5363505), (5, 4290804), (6, 3575670), (7, 3064860), (9, 2383780), (10, 2145402), (12, 1787835), (14, 1532430), (15, 1430268), (18, 1191890), (20, 1072701), (21, 1021620), (28, 766215), (30, 715134), (35, 612972), (36, 595945), (42, 510810), (45, 476756), (60, 357567), (63, 340540), (70, 306486), (84, 255405), (90, 238378), (105, 204324), (126, 170270), (140, 153243), (180, 119189), (210, 102162), (252, 85135), (315, 68108), (420, 51081), (630, 34054), (1260, 17027)]