20050550

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{283}}^1$

素因数の和:417

約数の個数: 48

約数和(自身を含む): 40674480

約数和(自身を除く): 20623930

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 109, 130, 218, 283, 325, 545, 566, 650, 1090, 1415, 1417, 2725, 2830, 2834, 3679, 5450, 7075, 7085, 7358, 14150, 14170, 18395, 30847, 35425, 36790, 61694, 70850, 91975, 154235, 183950, 308470, 401011, 771175, 802022, 1542350, 2005055, 4010110, 10025275, 20050550]

約数ペア:

[(1, 20050550), (2, 10025275), (5, 4010110), (10, 2005055), (13, 1542350), (25, 802022), (26, 771175), (50, 401011), (65, 308470), (109, 183950), (130, 154235), (218, 91975), (283, 70850), (325, 61694), (545, 36790), (566, 35425), (650, 30847), (1090, 18395), (1415, 14170), (1417, 14150), (2725, 7358), (2830, 7085), (2834, 7075), (3679, 5450)]