205601680

素因数分解:

$2^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{15767}}^1$

素因数の和:15943

約数の個数: 40

約数和(自身を含む): 480987072

約数和(自身を除く): 275385392

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 163, 326, 652, 815, 1304, 1630, 2608, 3260, 6520, 13040, 15767, 31534, 63068, 78835, 126136, 157670, 252272, 315340, 630680, 1261360, 2570021, 5140042, 10280084, 12850105, 20560168, 25700210, 41120336, 51400420, 102800840, 205601680]

約数ペア:

[(1, 205601680), (2, 102800840), (4, 51400420), (5, 41120336), (8, 25700210), (10, 20560168), (16, 12850105), (20, 10280084), (40, 5140042), (80, 2570021), (163, 1261360), (326, 630680), (652, 315340), (815, 252272), (1304, 157670), (1630, 126136), (2608, 78835), (3260, 63068), (6520, 31534), (13040, 15767)]