21289984

素因数分解:

$2^{10}\times {\mathrm{17}}^1\times {\mathrm{1223}}^1$

素因数の和:1260

約数の個数: 44

約数和(自身を含む): 45099504

約数和(自身を除く): 23809520

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 128, 136, 256, 272, 512, 544, 1024, 1088, 1223, 2176, 2446, 4352, 4892, 8704, 9784, 17408, 19568, 20791, 39136, 41582, 78272, 83164, 156544, 166328, 313088, 332656, 626176, 665312, 1252352, 1330624, 2661248, 5322496, 10644992, 21289984]

約数ペア:

[(1, 21289984), (2, 10644992), (4, 5322496), (8, 2661248), (16, 1330624), (17, 1252352), (32, 665312), (34, 626176), (64, 332656), (68, 313088), (128, 166328), (136, 156544), (256, 83164), (272, 78272), (512, 41582), (544, 39136), (1024, 20791), (1088, 19568), (1223, 17408), (2176, 9784), (2446, 8704), (4352, 4892)]