890212990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1\times {\mathrm{373}}^1$

素因数の和:637

約数の個数: 64

約数和(自身を含む): 1730393280

約数和(自身を除く): 840180290

約数列:

[1, 2, 5, 10, 17, 34, 85, 101, 139, 170, 202, 278, 373, 505, 695, 746, 1010, 1390, 1717, 1865, 2363, 3434, 3730, 4726, 6341, 8585, 11815, 12682, 14039, 17170, 23630, 28078, 31705, 37673, 51847, 63410, 70195, 75346, 103694, 140390, 188365, 238663, 259235, 376730, 477326, 518470, 640441, 881399, 1193315, 1280882, 1762798, 2386630, 3202205, 4406995, 5236547, 6404410, 8813990, 10473094, 26182735, 52365470, 89021299, 178042598, 445106495, 890212990]

約数ペア:

[(1, 890212990), (2, 445106495), (5, 178042598), (10, 89021299), (17, 52365470), (34, 26182735), (85, 10473094), (101, 8813990), (139, 6404410), (170, 5236547), (202, 4406995), (278, 3202205), (373, 2386630), (505, 1762798), (695, 1280882), (746, 1193315), (1010, 881399), (1390, 640441), (1717, 518470), (1865, 477326), (2363, 376730), (3434, 259235), (3730, 238663), (4726, 188365), (6341, 140390), (8585, 103694), (11815, 75346), (12682, 70195), (14039, 63410), (17170, 51847), (23630, 37673), (28078, 31705)]