21210448

素因数分解:

$2^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1$

素因数の和:236

約数の個数: 80

約数和(自身を含む): 49996800

約数和(自身を除く): 28786352

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 41, 56, 62, 82, 112, 124, 149, 164, 217, 248, 287, 298, 328, 434, 496, 574, 596, 656, 868, 1043, 1148, 1192, 1271, 1736, 2086, 2296, 2384, 2542, 3472, 4172, 4592, 4619, 5084, 6109, 8344, 8897, 9238, 10168, 12218, 16688, 17794, 18476, 20336, 24436, 32333, 35588, 36952, 42763, 48872, 64666, 71176, 73904, 85526, 97744, 129332, 142352, 171052, 189379, 258664, 342104, 378758, 517328, 684208, 757516, 1325653, 1515032, 2651306, 3030064, 5302612, 10605224, 21210448]

約数ペア:

[(1, 21210448), (2, 10605224), (4, 5302612), (7, 3030064), (8, 2651306), (14, 1515032), (16, 1325653), (28, 757516), (31, 684208), (41, 517328), (56, 378758), (62, 342104), (82, 258664), (112, 189379), (124, 171052), (149, 142352), (164, 129332), (217, 97744), (248, 85526), (287, 73904), (298, 71176), (328, 64666), (434, 48872), (496, 42763), (574, 36952), (596, 35588), (656, 32333), (868, 24436), (1043, 20336), (1148, 18476), (1192, 17794), (1271, 16688), (1736, 12218), (2086, 10168), (2296, 9238), (2384, 8897), (2542, 8344), (3472, 6109), (4172, 5084), (4592, 4619)]