20784899330

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{647303}}^1$

素因数の和:647355

約数の個数: 48

約数和(自身を含む): 42644387520

約数和(自身を除く): 21859488190

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 169, 190, 247, 338, 494, 845, 1235, 1690, 2470, 3211, 6422, 16055, 32110, 647303, 1294606, 3236515, 6473030, 8414939, 12298757, 16829878, 24597514, 42074695, 61493785, 84149390, 109394207, 122987570, 159883841, 218788414, 319767682, 546971035, 799419205, 1093942070, 1598838410, 2078489933, 4156979866, 10392449665, 20784899330]

約数ペア:

[(1, 20784899330), (2, 10392449665), (5, 4156979866), (10, 2078489933), (13, 1598838410), (19, 1093942070), (26, 799419205), (38, 546971035), (65, 319767682), (95, 218788414), (130, 159883841), (169, 122987570), (190, 109394207), (247, 84149390), (338, 61493785), (494, 42074695), (845, 24597514), (1235, 16829878), (1690, 12298757), (2470, 8414939), (3211, 6473030), (6422, 3236515), (16055, 1294606), (32110, 647303)]