21123480

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{25147}}^1$

素因数の和:25168

約数の個数: 64

約数和(自身を含む): 72426240

約数和(自身を除く): 51302760

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, 25147, 50294, 75441, 100588, 125735, 150882, 176029, 201176, 251470, 301764, 352058, 377205, 502940, 528087, 603528, 704116, 754410, 880145, 1005880, 1056174, 1408232, 1508820, 1760290, 2112348, 2640435, 3017640, 3520580, 4224696, 5280870, 7041160, 10561740, 21123480]

約数ペア:

[(1, 21123480), (2, 10561740), (3, 7041160), (4, 5280870), (5, 4224696), (6, 3520580), (7, 3017640), (8, 2640435), (10, 2112348), (12, 1760290), (14, 1508820), (15, 1408232), (20, 1056174), (21, 1005880), (24, 880145), (28, 754410), (30, 704116), (35, 603528), (40, 528087), (42, 502940), (56, 377205), (60, 352058), (70, 301764), (84, 251470), (105, 201176), (120, 176029), (140, 150882), (168, 125735), (210, 100588), (280, 75441), (420, 50294), (840, 25147)]