80878175

素因数分解:

$5^2\times 7^2\times {\mathrm{103}}^1\times {\mathrm{641}}^1$

素因数の和:768

約数の個数: 36

約数和(自身を含む): 117979056

約数和(自身を除く): 37100881

約数列:

[1, 5, 7, 25, 35, 49, 103, 175, 245, 515, 641, 721, 1225, 2575, 3205, 3605, 4487, 5047, 16025, 18025, 22435, 25235, 31409, 66023, 112175, 126175, 157045, 330115, 462161, 785225, 1650575, 2310805, 3235127, 11554025, 16175635, 80878175]

約数ペア:

[(1, 80878175), (5, 16175635), (7, 11554025), (25, 3235127), (35, 2310805), (49, 1650575), (103, 785225), (175, 462161), (245, 330115), (515, 157045), (641, 126175), (721, 112175), (1225, 66023), (2575, 31409), (3205, 25235), (3605, 22435), (4487, 18025), (5047, 16025)]