20529664

素因数分解:

$2^9\times {\mathrm{101}}^1\times {\mathrm{397}}^1$

素因数の和:516

約数の個数: 40

約数和(自身を含む): 41529708

約数和(自身を除く): 21000044

約数列:

[1, 2, 4, 8, 16, 32, 64, 101, 128, 202, 256, 397, 404, 512, 794, 808, 1588, 1616, 3176, 3232, 6352, 6464, 12704, 12928, 25408, 25856, 40097, 50816, 51712, 80194, 101632, 160388, 203264, 320776, 641552, 1283104, 2566208, 5132416, 10264832, 20529664]

約数ペア:

[(1, 20529664), (2, 10264832), (4, 5132416), (8, 2566208), (16, 1283104), (32, 641552), (64, 320776), (101, 203264), (128, 160388), (202, 101632), (256, 80194), (397, 51712), (404, 50816), (512, 40097), (794, 25856), (808, 25408), (1588, 12928), (1616, 12704), (3176, 6464), (3232, 6352)]