641959969

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{157}}^1\times {\mathrm{233}}^1$

素因数の和:529

約数の個数: 32

約数和(自身を含む): 780848640

約数和(自身を除く): 138888671

約数列:

[1, 7, 23, 109, 157, 161, 233, 763, 1099, 1631, 2507, 3611, 5359, 17113, 17549, 25277, 25397, 36581, 37513, 119791, 177779, 256067, 393599, 584131, 841363, 2755193, 3987329, 4088917, 5889541, 27911303, 91708567, 641959969]

約数ペア:

[(1, 641959969), (7, 91708567), (23, 27911303), (109, 5889541), (157, 4088917), (161, 3987329), (233, 2755193), (763, 841363), (1099, 584131), (1631, 393599), (2507, 256067), (3611, 177779), (5359, 119791), (17113, 37513), (17549, 36581), (25277, 25397)]