21686640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{829}}^1$

素因数の和:954

約数の個数: 80

約数和(自身を含む): 67927200

約数和(自身を除く): 46240560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 109, 120, 218, 240, 327, 436, 545, 654, 829, 872, 1090, 1308, 1635, 1658, 1744, 2180, 2487, 2616, 3270, 3316, 4145, 4360, 4974, 5232, 6540, 6632, 8290, 8720, 9948, 12435, 13080, 13264, 16580, 19896, 24870, 26160, 33160, 39792, 49740, 66320, 90361, 99480, 180722, 198960, 271083, 361444, 451805, 542166, 722888, 903610, 1084332, 1355415, 1445776, 1807220, 2168664, 2710830, 3614440, 4337328, 5421660, 7228880, 10843320, 21686640]

約数ペア:

[(1, 21686640), (2, 10843320), (3, 7228880), (4, 5421660), (5, 4337328), (6, 3614440), (8, 2710830), (10, 2168664), (12, 1807220), (15, 1445776), (16, 1355415), (20, 1084332), (24, 903610), (30, 722888), (40, 542166), (48, 451805), (60, 361444), (80, 271083), (109, 198960), (120, 180722), (218, 99480), (240, 90361), (327, 66320), (436, 49740), (545, 39792), (654, 33160), (829, 26160), (872, 24870), (1090, 19896), (1308, 16580), (1635, 13264), (1658, 13080), (1744, 12435), (2180, 9948), (2487, 8720), (2616, 8290), (3270, 6632), (3316, 6540), (4145, 5232), (4360, 4974)]