20828570

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{761}}^1$

素因数の和:815

約数の個数: 64

約数和(自身を含む): 47402496

約数和(自身を除く): 26573926

約数列:

[1, 2, 5, 7, 10, 14, 17, 23, 34, 35, 46, 70, 85, 115, 119, 161, 170, 230, 238, 322, 391, 595, 761, 782, 805, 1190, 1522, 1610, 1955, 2737, 3805, 3910, 5327, 5474, 7610, 10654, 12937, 13685, 17503, 25874, 26635, 27370, 35006, 53270, 64685, 87515, 90559, 122521, 129370, 175030, 181118, 245042, 297551, 452795, 595102, 612605, 905590, 1225210, 1487755, 2082857, 2975510, 4165714, 10414285, 20828570]

約数ペア:

[(1, 20828570), (2, 10414285), (5, 4165714), (7, 2975510), (10, 2082857), (14, 1487755), (17, 1225210), (23, 905590), (34, 612605), (35, 595102), (46, 452795), (70, 297551), (85, 245042), (115, 181118), (119, 175030), (161, 129370), (170, 122521), (230, 90559), (238, 87515), (322, 64685), (391, 53270), (595, 35006), (761, 27370), (782, 26635), (805, 25874), (1190, 17503), (1522, 13685), (1610, 12937), (1955, 10654), (2737, 7610), (3805, 5474), (3910, 5327)]