19019728

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{13063}}^1$

素因数の和:13091

約数の個数: 40

約数和(自身を含む): 45358208

約数和(自身を除く): 26338480

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 13063, 26126, 52252, 91441, 104504, 169819, 182882, 209008, 339638, 365764, 679276, 731528, 1188733, 1358552, 1463056, 2377466, 2717104, 4754932, 9509864, 19019728]

約数ペア:

[(1, 19019728), (2, 9509864), (4, 4754932), (7, 2717104), (8, 2377466), (13, 1463056), (14, 1358552), (16, 1188733), (26, 731528), (28, 679276), (52, 365764), (56, 339638), (91, 209008), (104, 182882), (112, 169819), (182, 104504), (208, 91441), (364, 52252), (728, 26126), (1456, 13063)]