19842290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{199}}^1$

素因数の和:291

約数の個数: 48

約数和(自身を含む): 39528000

約数和(自身を除く): 19685710

約数列:

[1, 2, 5, 10, 13, 26, 59, 65, 118, 130, 169, 199, 295, 338, 398, 590, 767, 845, 995, 1534, 1690, 1990, 2587, 3835, 5174, 7670, 9971, 11741, 12935, 19942, 23482, 25870, 33631, 49855, 58705, 67262, 99710, 117410, 152633, 168155, 305266, 336310, 763165, 1526330, 1984229, 3968458, 9921145, 19842290]

約数ペア:

[(1, 19842290), (2, 9921145), (5, 3968458), (10, 1984229), (13, 1526330), (26, 763165), (59, 336310), (65, 305266), (118, 168155), (130, 152633), (169, 117410), (199, 99710), (295, 67262), (338, 58705), (398, 49855), (590, 33631), (767, 25870), (845, 23482), (995, 19942), (1534, 12935), (1690, 11741), (1990, 9971), (2587, 7670), (3835, 5174)]