19915440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{82981}}^1$

素因数の和:82997

約数の個数: 40

約数和(自身を含む): 61738608

約数和(自身を除く): 41823168

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 82981, 165962, 248943, 331924, 414905, 497886, 663848, 829810, 995772, 1244715, 1327696, 1659620, 1991544, 2489430, 3319240, 3983088, 4978860, 6638480, 9957720, 19915440]

約数ペア:

[(1, 19915440), (2, 9957720), (3, 6638480), (4, 4978860), (5, 3983088), (6, 3319240), (8, 2489430), (10, 1991544), (12, 1659620), (15, 1327696), (16, 1244715), (20, 995772), (24, 829810), (30, 663848), (40, 497886), (48, 414905), (60, 331924), (80, 248943), (120, 165962), (240, 82981)]