21312512

素因数分解:

$2^{10}\times {\mathrm{13}}^1\times {\mathrm{1601}}^1$

素因数の和:1634

約数の個数: 44

約数和(自身を含む): 45910116

約数和(自身を除く): 24597604

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 256, 416, 512, 832, 1024, 1601, 1664, 3202, 3328, 6404, 6656, 12808, 13312, 20813, 25616, 41626, 51232, 83252, 102464, 166504, 204928, 333008, 409856, 666016, 819712, 1332032, 1639424, 2664064, 5328128, 10656256, 21312512]

約数ペア:

[(1, 21312512), (2, 10656256), (4, 5328128), (8, 2664064), (13, 1639424), (16, 1332032), (26, 819712), (32, 666016), (52, 409856), (64, 333008), (104, 204928), (128, 166504), (208, 102464), (256, 83252), (416, 51232), (512, 41626), (832, 25616), (1024, 20813), (1601, 13312), (1664, 12808), (3202, 6656), (3328, 6404)]