19967584

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{6857}}^1$

素因数の和:6887

約数の個数: 48

約数和(自身を含む): 48390048

約数和(自身を除く): 28422464

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 91, 104, 112, 182, 208, 224, 364, 416, 728, 1456, 2912, 6857, 13714, 27428, 47999, 54856, 89141, 95998, 109712, 178282, 191996, 219424, 356564, 383992, 623987, 713128, 767984, 1247974, 1426256, 1535968, 2495948, 2852512, 4991896, 9983792, 19967584]

約数ペア:

[(1, 19967584), (2, 9983792), (4, 4991896), (7, 2852512), (8, 2495948), (13, 1535968), (14, 1426256), (16, 1247974), (26, 767984), (28, 713128), (32, 623987), (52, 383992), (56, 356564), (91, 219424), (104, 191996), (112, 178282), (182, 109712), (208, 95998), (224, 89141), (364, 54856), (416, 47999), (728, 27428), (1456, 13714), (2912, 6857)]