19903806728

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{15263}}^1\times {\mathrm{12539}}^1$

素因数の和:27821

約数の個数: 32

約数和(自身を含む): 40196217600

約数和(自身を除く): 20292410872

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 12539, 15263, 25078, 30526, 50156, 61052, 100312, 122104, 163007, 198419, 326014, 396838, 652028, 793676, 1304056, 1587352, 191382757, 382765514, 765531028, 1531062056, 2487975841, 4975951682, 9951903364, 19903806728]

約数ペア:

[(1, 19903806728), (2, 9951903364), (4, 4975951682), (8, 2487975841), (13, 1531062056), (26, 765531028), (52, 382765514), (104, 191382757), (12539, 1587352), (15263, 1304056), (25078, 793676), (30526, 652028), (50156, 396838), (61052, 326014), (100312, 198419), (122104, 163007)]