221545960

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{135089}}^1$

素因数の和:135141

約数の個数: 32

約数和(自身を含む): 510640200

約数和(自身を除く): 289094240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 135089, 270178, 540356, 675445, 1080712, 1350890, 2701780, 5403560, 5538649, 11077298, 22154596, 27693245, 44309192, 55386490, 110772980, 221545960]

約数ペア:

[(1, 221545960), (2, 110772980), (4, 55386490), (5, 44309192), (8, 27693245), (10, 22154596), (20, 11077298), (40, 5538649), (41, 5403560), (82, 2701780), (164, 1350890), (205, 1080712), (328, 675445), (410, 540356), (820, 270178), (1640, 135089)]