20888934820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{577}}^1\times {\mathrm{139241}}^1$

素因数の和:139840

約数の個数: 48

約数和(自身を含む): 47323343088

約数和(自身を除く): 26434408268

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 577, 1154, 2308, 2885, 5770, 7501, 11540, 15002, 30004, 37505, 75010, 139241, 150020, 278482, 556964, 696205, 1392410, 1810133, 2784820, 3620266, 7240532, 9050665, 18101330, 36202660, 80342057, 160684114, 321368228, 401710285, 803420570, 1044446741, 1606841140, 2088893482, 4177786964, 5222233705, 10444467410, 20888934820]

約数ペア:

[(1, 20888934820), (2, 10444467410), (4, 5222233705), (5, 4177786964), (10, 2088893482), (13, 1606841140), (20, 1044446741), (26, 803420570), (52, 401710285), (65, 321368228), (130, 160684114), (260, 80342057), (577, 36202660), (1154, 18101330), (2308, 9050665), (2885, 7240532), (5770, 3620266), (7501, 2784820), (11540, 1810133), (15002, 1392410), (30004, 696205), (37505, 556964), (75010, 278482), (139241, 150020)]