20171888900

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{65557}}^1$

素因数の和:65769

約数の個数: 72

約数和(自身を含む): 46604657736

約数和(自身を除く): 26432768836

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 170, 181, 340, 362, 425, 724, 850, 905, 1700, 1810, 3077, 3620, 4525, 6154, 9050, 12308, 15385, 18100, 30770, 61540, 65557, 76925, 131114, 153850, 262228, 307700, 327785, 655570, 1114469, 1311140, 1638925, 2228938, 3277850, 4457876, 5572345, 6555700, 11144690, 11865817, 22289380, 23731634, 27861725, 47463268, 55723450, 59329085, 111446900, 118658170, 201718889, 237316340, 296645425, 403437778, 593290850, 806875556, 1008594445, 1186581700, 2017188890, 4034377780, 5042972225, 10085944450, 20171888900]

約数ペア:

[(1, 20171888900), (2, 10085944450), (4, 5042972225), (5, 4034377780), (10, 2017188890), (17, 1186581700), (20, 1008594445), (25, 806875556), (34, 593290850), (50, 403437778), (68, 296645425), (85, 237316340), (100, 201718889), (170, 118658170), (181, 111446900), (340, 59329085), (362, 55723450), (425, 47463268), (724, 27861725), (850, 23731634), (905, 22289380), (1700, 11865817), (1810, 11144690), (3077, 6555700), (3620, 5572345), (4525, 4457876), (6154, 3277850), (9050, 2228938), (12308, 1638925), (15385, 1311140), (18100, 1114469), (30770, 655570), (61540, 327785), (65557, 307700), (76925, 262228), (131114, 153850)]