20905164

素因数分解:

$2^2\times 3^2\times 7^3\times {\mathrm{1693}}^1$

素因数の和:1724

約数の個数: 72

約数和(自身を含む): 61661600

約数和(自身を除く): 40756436

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 49, 63, 84, 98, 126, 147, 196, 252, 294, 343, 441, 588, 686, 882, 1029, 1372, 1693, 1764, 2058, 3087, 3386, 4116, 5079, 6174, 6772, 10158, 11851, 12348, 15237, 20316, 23702, 30474, 35553, 47404, 60948, 71106, 82957, 106659, 142212, 165914, 213318, 248871, 331828, 426636, 497742, 580699, 746613, 995484, 1161398, 1493226, 1742097, 2322796, 2986452, 3484194, 5226291, 6968388, 10452582, 20905164]

約数ペア:

[(1, 20905164), (2, 10452582), (3, 6968388), (4, 5226291), (6, 3484194), (7, 2986452), (9, 2322796), (12, 1742097), (14, 1493226), (18, 1161398), (21, 995484), (28, 746613), (36, 580699), (42, 497742), (49, 426636), (63, 331828), (84, 248871), (98, 213318), (126, 165914), (147, 142212), (196, 106659), (252, 82957), (294, 71106), (343, 60948), (441, 47404), (588, 35553), (686, 30474), (882, 23702), (1029, 20316), (1372, 15237), (1693, 12348), (1764, 11851), (2058, 10158), (3087, 6772), (3386, 6174), (4116, 5079)]