18967984

素因数分解:

$2^4\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1039}}^1$

素因数の和:1217

約数の個数: 40

約数和(自身を含む): 42298880

約数和(自身を除く): 23330896

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 163, 326, 652, 1039, 1141, 1304, 2078, 2282, 2608, 4156, 4564, 7273, 8312, 9128, 14546, 16624, 18256, 29092, 58184, 116368, 169357, 338714, 677428, 1185499, 1354856, 2370998, 2709712, 4741996, 9483992, 18967984]

約数ペア:

[(1, 18967984), (2, 9483992), (4, 4741996), (7, 2709712), (8, 2370998), (14, 1354856), (16, 1185499), (28, 677428), (56, 338714), (112, 169357), (163, 116368), (326, 58184), (652, 29092), (1039, 18256), (1141, 16624), (1304, 14546), (2078, 9128), (2282, 8312), (2608, 7273), (4156, 4564)]