21481728

素因数分解:

$2^8\times 3^1\times {\mathrm{83}}^1\times {\mathrm{337}}^1$

素因数の和:439

約数の個数: 72

約数和(自身を含む): 58033248

約数和(自身を除く): 36551520

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 83, 96, 128, 166, 192, 249, 256, 332, 337, 384, 498, 664, 674, 768, 996, 1011, 1328, 1348, 1992, 2022, 2656, 2696, 3984, 4044, 5312, 5392, 7968, 8088, 10624, 10784, 15936, 16176, 21248, 21568, 27971, 31872, 32352, 43136, 55942, 63744, 64704, 83913, 86272, 111884, 129408, 167826, 223768, 258816, 335652, 447536, 671304, 895072, 1342608, 1790144, 2685216, 3580288, 5370432, 7160576, 10740864, 21481728]

約数ペア:

[(1, 21481728), (2, 10740864), (3, 7160576), (4, 5370432), (6, 3580288), (8, 2685216), (12, 1790144), (16, 1342608), (24, 895072), (32, 671304), (48, 447536), (64, 335652), (83, 258816), (96, 223768), (128, 167826), (166, 129408), (192, 111884), (249, 86272), (256, 83913), (332, 64704), (337, 63744), (384, 55942), (498, 43136), (664, 32352), (674, 31872), (768, 27971), (996, 21568), (1011, 21248), (1328, 16176), (1348, 15936), (1992, 10784), (2022, 10624), (2656, 8088), (2696, 7968), (3984, 5392), (4044, 5312)]