78781780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{51157}}^1$

素因数の和:51184

約数の個数: 48

約数和(自身を含む): 206269056

約数和(自身を除く): 127487276

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 51157, 102314, 204628, 255785, 358099, 511570, 562727, 716198, 1023140, 1125454, 1432396, 1790495, 2250908, 2813635, 3580990, 3939089, 5627270, 7161980, 7878178, 11254540, 15756356, 19695445, 39390890, 78781780]

約数ペア:

[(1, 78781780), (2, 39390890), (4, 19695445), (5, 15756356), (7, 11254540), (10, 7878178), (11, 7161980), (14, 5627270), (20, 3939089), (22, 3580990), (28, 2813635), (35, 2250908), (44, 1790495), (55, 1432396), (70, 1125454), (77, 1023140), (110, 716198), (140, 562727), (154, 511570), (220, 358099), (308, 255785), (385, 204628), (770, 102314), (1540, 51157)]