30981800

素因数分解:

$2^3\times 5^2\times {\mathrm{97}}^1\times {\mathrm{1597}}^1$

素因数の和:1710

約数の個数: 48

約数和(自身を含む): 72820860

約数和(自身を除く): 41839060

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 97, 100, 194, 200, 388, 485, 776, 970, 1597, 1940, 2425, 3194, 3880, 4850, 6388, 7985, 9700, 12776, 15970, 19400, 31940, 39925, 63880, 79850, 154909, 159700, 309818, 319400, 619636, 774545, 1239272, 1549090, 3098180, 3872725, 6196360, 7745450, 15490900, 30981800]

約数ペア:

[(1, 30981800), (2, 15490900), (4, 7745450), (5, 6196360), (8, 3872725), (10, 3098180), (20, 1549090), (25, 1239272), (40, 774545), (50, 619636), (97, 319400), (100, 309818), (194, 159700), (200, 154909), (388, 79850), (485, 63880), (776, 39925), (970, 31940), (1597, 19400), (1940, 15970), (2425, 12776), (3194, 9700), (3880, 7985), (4850, 6388)]