21471952

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{78941}}^1$

素因数の和:78966

約数の個数: 20

約数和(自身を含む): 44049636

約数和(自身を除く): 22577684

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 78941, 157882, 315764, 631528, 1263056, 1341997, 2683994, 5367988, 10735976, 21471952]

約数ペア:

[(1, 21471952), (2, 10735976), (4, 5367988), (8, 2683994), (16, 1341997), (17, 1263056), (34, 631528), (68, 315764), (136, 157882), (272, 78941)]