210817825

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{139}}^1$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 288870400

約数和(自身を除く): 78052575

約数列:

[1, 5, 19, 25, 31, 95, 103, 139, 155, 475, 515, 589, 695, 775, 1957, 2575, 2641, 2945, 3193, 3475, 4309, 9785, 13205, 14317, 14725, 15965, 21545, 48925, 60667, 66025, 71585, 79825, 81871, 107725, 272023, 303335, 357925, 409355, 443827, 1360115, 1516675, 2046775, 2219135, 6800575, 8432713, 11095675, 42163565, 210817825]

約数ペア:

[(1, 210817825), (5, 42163565), (19, 11095675), (25, 8432713), (31, 6800575), (95, 2219135), (103, 2046775), (139, 1516675), (155, 1360115), (475, 443827), (515, 409355), (589, 357925), (695, 303335), (775, 272023), (1957, 107725), (2575, 81871), (2641, 79825), (2945, 71585), (3193, 66025), (3475, 60667), (4309, 48925), (9785, 21545), (13205, 15965), (14317, 14725)]