19710470

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{107}}^1\times {\mathrm{109}}^1$

素因数の和:249

約数の個数: 48

約数和(自身を含む): 39132720

約数和(自身を除く): 19422250

約数列:

[1, 2, 5, 10, 13, 26, 65, 107, 109, 130, 169, 214, 218, 338, 535, 545, 845, 1070, 1090, 1391, 1417, 1690, 2782, 2834, 6955, 7085, 11663, 13910, 14170, 18083, 18421, 23326, 36166, 36842, 58315, 90415, 92105, 116630, 151619, 180830, 184210, 303238, 758095, 1516190, 1971047, 3942094, 9855235, 19710470]

約数ペア:

[(1, 19710470), (2, 9855235), (5, 3942094), (10, 1971047), (13, 1516190), (26, 758095), (65, 303238), (107, 184210), (109, 180830), (130, 151619), (169, 116630), (214, 92105), (218, 90415), (338, 58315), (535, 36842), (545, 36166), (845, 23326), (1070, 18421), (1090, 18083), (1391, 14170), (1417, 13910), (1690, 11663), (2782, 7085), (2834, 6955)]