81315728

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{12611}}^1$

素因数の和:12663

約数の個数: 40

約数和(自身を含む): 175155456

約数和(自身を除く): 93839728

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 208, 248, 403, 496, 806, 1612, 3224, 6448, 12611, 25222, 50444, 100888, 163943, 201776, 327886, 390941, 655772, 781882, 1311544, 1563764, 2623088, 3127528, 5082233, 6255056, 10164466, 20328932, 40657864, 81315728]

約数ペア:

[(1, 81315728), (2, 40657864), (4, 20328932), (8, 10164466), (13, 6255056), (16, 5082233), (26, 3127528), (31, 2623088), (52, 1563764), (62, 1311544), (104, 781882), (124, 655772), (208, 390941), (248, 327886), (403, 201776), (496, 163943), (806, 100888), (1612, 50444), (3224, 25222), (6448, 12611)]