221662721

素因数分解:

$7^4\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1$

素因数の和:203

約数の個数: 40

約数和(自身を含む): 280996320

約数和(自身を除く): 59333599

約数列:

[1, 7, 19, 43, 49, 113, 133, 301, 343, 791, 817, 931, 2107, 2147, 2401, 4859, 5537, 5719, 6517, 14749, 15029, 34013, 38759, 40033, 45619, 92321, 103243, 105203, 238091, 271313, 280231, 646247, 736421, 1666637, 1961617, 4523729, 5154947, 11666459, 31666103, 221662721]

約数ペア:

[(1, 221662721), (7, 31666103), (19, 11666459), (43, 5154947), (49, 4523729), (113, 1961617), (133, 1666637), (301, 736421), (343, 646247), (791, 280231), (817, 271313), (931, 238091), (2107, 105203), (2147, 103243), (2401, 92321), (4859, 45619), (5537, 40033), (5719, 38759), (6517, 34013), (14749, 15029)]