20722208

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{457}}^1$

素因数の和:589

約数の個数: 48

約数和(自身を含む): 44435160

約数和(自身を除く): 23712952

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 109, 208, 218, 416, 436, 457, 872, 914, 1417, 1744, 1828, 2834, 3488, 3656, 5668, 5941, 7312, 11336, 11882, 14624, 22672, 23764, 45344, 47528, 49813, 95056, 99626, 190112, 199252, 398504, 647569, 797008, 1295138, 1594016, 2590276, 5180552, 10361104, 20722208]

約数ペア:

[(1, 20722208), (2, 10361104), (4, 5180552), (8, 2590276), (13, 1594016), (16, 1295138), (26, 797008), (32, 647569), (52, 398504), (104, 199252), (109, 190112), (208, 99626), (218, 95056), (416, 49813), (436, 47528), (457, 45344), (872, 23764), (914, 22672), (1417, 14624), (1744, 11882), (1828, 11336), (2834, 7312), (3488, 5941), (3656, 5668)]