21046816

素因数分解:

$2^5\times 7^1\times {\mathrm{17}}^1\times {\mathrm{5527}}^1$

素因数の和:5561

約数の個数: 48

約数和(自身を含む): 50150016

約数和(自身を除く): 29103200

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 56, 68, 112, 119, 136, 224, 238, 272, 476, 544, 952, 1904, 3808, 5527, 11054, 22108, 38689, 44216, 77378, 88432, 93959, 154756, 176864, 187918, 309512, 375836, 619024, 657713, 751672, 1238048, 1315426, 1503344, 2630852, 3006688, 5261704, 10523408, 21046816]

約数ペア:

[(1, 21046816), (2, 10523408), (4, 5261704), (7, 3006688), (8, 2630852), (14, 1503344), (16, 1315426), (17, 1238048), (28, 751672), (32, 657713), (34, 619024), (56, 375836), (68, 309512), (112, 187918), (119, 176864), (136, 154756), (224, 93959), (238, 88432), (272, 77378), (476, 44216), (544, 38689), (952, 22108), (1904, 11054), (3808, 5527)]