678434780

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{373}}^1\times {\mathrm{457}}^1$

素因数の和:1038

約数の個数: 48

約数和(自身を含む): 1438852800

約数和(自身を除く): 760418020

約数列:

[1, 2, 4, 5, 10, 20, 199, 373, 398, 457, 746, 796, 914, 995, 1492, 1828, 1865, 1990, 2285, 3730, 3980, 4570, 7460, 9140, 74227, 90943, 148454, 170461, 181886, 296908, 340922, 363772, 371135, 454715, 681844, 742270, 852305, 909430, 1484540, 1704610, 1818860, 3409220, 33921739, 67843478, 135686956, 169608695, 339217390, 678434780]

約数ペア:

[(1, 678434780), (2, 339217390), (4, 169608695), (5, 135686956), (10, 67843478), (20, 33921739), (199, 3409220), (373, 1818860), (398, 1704610), (457, 1484540), (746, 909430), (796, 852305), (914, 742270), (995, 681844), (1492, 454715), (1828, 371135), (1865, 363772), (1990, 340922), (2285, 296908), (3730, 181886), (3980, 170461), (4570, 148454), (7460, 90943), (9140, 74227)]