18132257

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1$

素因数の和:233

約数の個数: 32

約数和(自身を含む): 22982400

約数和(自身を除く): 4850143

約数列:

[1, 11, 13, 23, 37, 143, 149, 253, 299, 407, 481, 851, 1639, 1937, 3289, 3427, 5291, 5513, 9361, 11063, 21307, 37697, 44551, 60643, 71669, 121693, 126799, 490061, 788359, 1394789, 1648387, 18132257]

約数ペア:

[(1, 18132257), (11, 1648387), (13, 1394789), (23, 788359), (37, 490061), (143, 126799), (149, 121693), (253, 71669), (299, 60643), (407, 44551), (481, 37697), (851, 21307), (1639, 11063), (1937, 9361), (3289, 5513), (3427, 5291)]