21721248

素因数分解:

$2^5\times 3^2\times {\mathrm{199}}^1\times {\mathrm{379}}^1$

素因数の和:594

約数の個数: 72

約数和(自身を含む): 62244000

約数和(自身を除く): 40522752

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 199, 288, 379, 398, 597, 758, 796, 1137, 1194, 1516, 1592, 1791, 2274, 2388, 3032, 3184, 3411, 3582, 4548, 4776, 6064, 6368, 6822, 7164, 9096, 9552, 12128, 13644, 14328, 18192, 19104, 27288, 28656, 36384, 54576, 57312, 75421, 109152, 150842, 226263, 301684, 452526, 603368, 678789, 905052, 1206736, 1357578, 1810104, 2413472, 2715156, 3620208, 5430312, 7240416, 10860624, 21721248]

約数ペア:

[(1, 21721248), (2, 10860624), (3, 7240416), (4, 5430312), (6, 3620208), (8, 2715156), (9, 2413472), (12, 1810104), (16, 1357578), (18, 1206736), (24, 905052), (32, 678789), (36, 603368), (48, 452526), (72, 301684), (96, 226263), (144, 150842), (199, 109152), (288, 75421), (379, 57312), (398, 54576), (597, 36384), (758, 28656), (796, 27288), (1137, 19104), (1194, 18192), (1516, 14328), (1592, 13644), (1791, 12128), (2274, 9552), (2388, 9096), (3032, 7164), (3184, 6822), (3411, 6368), (3582, 6064), (4548, 4776)]