79742780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{306703}}^1$

素因数の和:306725

約数の個数: 24

約数和(自身を含む): 180341952

約数和(自身を除く): 100599172

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 306703, 613406, 1226812, 1533515, 3067030, 3987139, 6134060, 7974278, 15948556, 19935695, 39871390, 79742780]

約数ペア:

[(1, 79742780), (2, 39871390), (4, 19935695), (5, 15948556), (10, 7974278), (13, 6134060), (20, 3987139), (26, 3067030), (52, 1533515), (65, 1226812), (130, 613406), (260, 306703)]