81731384

素因数分解:

$2^3\times 7^1\times {\mathrm{73}}^1\times {\mathrm{19993}}^1$

素因数の和:20079

約数の個数: 32

約数和(自身を含む): 177546720

約数和(自身を除く): 95815336

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 73, 146, 292, 511, 584, 1022, 2044, 4088, 19993, 39986, 79972, 139951, 159944, 279902, 559804, 1119608, 1459489, 2918978, 5837956, 10216423, 11675912, 20432846, 40865692, 81731384]

約数ペア:

[(1, 81731384), (2, 40865692), (4, 20432846), (7, 11675912), (8, 10216423), (14, 5837956), (28, 2918978), (56, 1459489), (73, 1119608), (146, 559804), (292, 279902), (511, 159944), (584, 139951), (1022, 79972), (2044, 39986), (4088, 19993)]