21387264

素因数分解:

$2^{11}\times 3^1\times {\mathrm{59}}^2$

素因数の和:143

約数の個数: 72

約数和(自身を含む): 58001580

約数和(自身を除く): 36614316

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 59, 64, 96, 118, 128, 177, 192, 236, 256, 354, 384, 472, 512, 708, 768, 944, 1024, 1416, 1536, 1888, 2048, 2832, 3072, 3481, 3776, 5664, 6144, 6962, 7552, 10443, 11328, 13924, 15104, 20886, 22656, 27848, 30208, 41772, 45312, 55696, 60416, 83544, 90624, 111392, 120832, 167088, 181248, 222784, 334176, 362496, 445568, 668352, 891136, 1336704, 1782272, 2673408, 3564544, 5346816, 7129088, 10693632, 21387264]

約数ペア:

[(1, 21387264), (2, 10693632), (3, 7129088), (4, 5346816), (6, 3564544), (8, 2673408), (12, 1782272), (16, 1336704), (24, 891136), (32, 668352), (48, 445568), (59, 362496), (64, 334176), (96, 222784), (118, 181248), (128, 167088), (177, 120832), (192, 111392), (236, 90624), (256, 83544), (354, 60416), (384, 55696), (472, 45312), (512, 41772), (708, 30208), (768, 27848), (944, 22656), (1024, 20886), (1416, 15104), (1536, 13924), (1888, 11328), (2048, 10443), (2832, 7552), (3072, 6962), (3481, 6144), (3776, 5664)]