18878384

素因数分解:

$2^4\times 7^1\times {\mathrm{73}}^1\times {\mathrm{2309}}^1$

素因数の和:2397

約数の個数: 40

約数和(自身を含む): 42393120

約数和(自身を除く): 23514736

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 73, 112, 146, 292, 511, 584, 1022, 1168, 2044, 2309, 4088, 4618, 8176, 9236, 16163, 18472, 32326, 36944, 64652, 129304, 168557, 258608, 337114, 674228, 1179899, 1348456, 2359798, 2696912, 4719596, 9439192, 18878384]

約数ペア:

[(1, 18878384), (2, 9439192), (4, 4719596), (7, 2696912), (8, 2359798), (14, 1348456), (16, 1179899), (28, 674228), (56, 337114), (73, 258608), (112, 168557), (146, 129304), (292, 64652), (511, 36944), (584, 32326), (1022, 18472), (1168, 16163), (2044, 9236), (2309, 8176), (4088, 4618)]