20736512

素因数分解:

$2^9\times {\mathrm{101}}^1\times {\mathrm{401}}^1$

素因数の和:520

約数の個数: 40

約数和(自身を含む): 41947092

約数和(自身を除く): 21210580

約数列:

[1, 2, 4, 8, 16, 32, 64, 101, 128, 202, 256, 401, 404, 512, 802, 808, 1604, 1616, 3208, 3232, 6416, 6464, 12832, 12928, 25664, 25856, 40501, 51328, 51712, 81002, 102656, 162004, 205312, 324008, 648016, 1296032, 2592064, 5184128, 10368256, 20736512]

約数ペア:

[(1, 20736512), (2, 10368256), (4, 5184128), (8, 2592064), (16, 1296032), (32, 648016), (64, 324008), (101, 205312), (128, 162004), (202, 102656), (256, 81002), (401, 51712), (404, 51328), (512, 40501), (802, 25856), (808, 25664), (1604, 12928), (1616, 12832), (3208, 6464), (3232, 6416)]