19878110

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{1427}}^1$

素因数の和:1640

約数の個数: 32

約数和(自身を含む): 41126400

約数和(自身を除く): 21248290

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 199, 398, 995, 1393, 1427, 1990, 2786, 2854, 6965, 7135, 9989, 13930, 14270, 19978, 49945, 99890, 283973, 567946, 1419865, 1987811, 2839730, 3975622, 9939055, 19878110]

約数ペア:

[(1, 19878110), (2, 9939055), (5, 3975622), (7, 2839730), (10, 1987811), (14, 1419865), (35, 567946), (70, 283973), (199, 99890), (398, 49945), (995, 19978), (1393, 14270), (1427, 13930), (1990, 9989), (2786, 7135), (2854, 6965)]