21454440

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{25541}}^1$

素因数の和:25562

約数の個数: 64

約数和(自身を含む): 73560960

約数和(自身を除く): 52106520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 25541, 51082, 76623, 102164, 127705, 153246, 178787, 204328, 255410, 306492, 357574, 383115, 510820, 536361, 612984, 715148, 766230, 893935, 1021640, 1072722, 1430296, 1532460, 1787870, 2145444, 2681805, 3064920, 3575740, 4290888, 5363610, 7151480, 10727220, 21454440]

約数ペア:

[(1, 21454440), (2, 10727220), (3, 7151480), (4, 5363610), (5, 4290888), (6, 3575740), (7, 3064920), (8, 2681805), (10, 2145444), (12, 1787870), (14, 1532460), (15, 1430296), (20, 1072722), (21, 1021640), (24, 893935), (28, 766230), (30, 715148), (35, 612984), (40, 536361), (42, 510820), (56, 383115), (60, 357574), (70, 306492), (84, 255410), (105, 204328), (120, 178787), (140, 153246), (168, 127705), (210, 102164), (280, 76623), (420, 51082), (840, 25541)]