20648704

素因数分解:

$2^8\times {\mathrm{79}}^1\times {\mathrm{1021}}^1$

素因数の和:1116

約数の個数: 36

約数和(自身を含む): 41779360

約数和(自身を除く): 21130656

約数列:

[1, 2, 4, 8, 16, 32, 64, 79, 128, 158, 256, 316, 632, 1021, 1264, 2042, 2528, 4084, 5056, 8168, 10112, 16336, 20224, 32672, 65344, 80659, 130688, 161318, 261376, 322636, 645272, 1290544, 2581088, 5162176, 10324352, 20648704]

約数ペア:

[(1, 20648704), (2, 10324352), (4, 5162176), (8, 2581088), (16, 1290544), (32, 645272), (64, 322636), (79, 261376), (128, 161318), (158, 130688), (256, 80659), (316, 65344), (632, 32672), (1021, 20224), (1264, 16336), (2042, 10112), (2528, 8168), (4084, 5056)]