15918580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{257}}^1$

素因数の和:448

約数の個数: 48

約数和(自身を含む): 35542080

約数和(自身を除く): 19623500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 163, 190, 257, 326, 380, 514, 652, 815, 1028, 1285, 1630, 2570, 3097, 3260, 4883, 5140, 6194, 9766, 12388, 15485, 19532, 24415, 30970, 41891, 48830, 61940, 83782, 97660, 167564, 209455, 418910, 795929, 837820, 1591858, 3183716, 3979645, 7959290, 15918580]

約数ペア:

[(1, 15918580), (2, 7959290), (4, 3979645), (5, 3183716), (10, 1591858), (19, 837820), (20, 795929), (38, 418910), (76, 209455), (95, 167564), (163, 97660), (190, 83782), (257, 61940), (326, 48830), (380, 41891), (514, 30970), (652, 24415), (815, 19532), (1028, 15485), (1285, 12388), (1630, 9766), (2570, 6194), (3097, 5140), (3260, 4883)]