157078660

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1\times {\mathrm{647}}^1$

素因数の和:916

約数の個数: 48

約数和(自身を含む): 337478400

約数和(自身を除く): 180399740

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 199, 244, 305, 398, 610, 647, 796, 995, 1220, 1294, 1990, 2588, 3235, 3980, 6470, 12139, 12940, 24278, 39467, 48556, 60695, 78934, 121390, 128753, 157868, 197335, 242780, 257506, 394670, 515012, 643765, 789340, 1287530, 2575060, 7853933, 15707866, 31415732, 39269665, 78539330, 157078660]

約数ペア:

[(1, 157078660), (2, 78539330), (4, 39269665), (5, 31415732), (10, 15707866), (20, 7853933), (61, 2575060), (122, 1287530), (199, 789340), (244, 643765), (305, 515012), (398, 394670), (610, 257506), (647, 242780), (796, 197335), (995, 157868), (1220, 128753), (1294, 121390), (1990, 78934), (2588, 60695), (3235, 48556), (3980, 39467), (6470, 24278), (12139, 12940)]