20512221772

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{359}}^1\times {\mathrm{701}}^1$

素因数の和:1183

約数の個数: 96

約数和(自身を含む): 42796615680

約数和(自身を除く): 22284393908

約数列:

[1, 2, 4, 7, 14, 28, 41, 71, 82, 142, 164, 284, 287, 359, 497, 574, 701, 718, 994, 1148, 1402, 1436, 1988, 2513, 2804, 2911, 4907, 5026, 5822, 9814, 10052, 11644, 14719, 19628, 20377, 25489, 28741, 29438, 40754, 49771, 50978, 57482, 58876, 81508, 99542, 101956, 103033, 114964, 178423, 199084, 201187, 206066, 251659, 348397, 356846, 402374, 412132, 503318, 696794, 713692, 804748, 1006636, 1045049, 1393588, 1761613, 2040611, 2090098, 3523226, 4081222, 4180196, 7046452, 7315343, 8162444, 10318019, 14284277, 14630686, 17867789, 20636038, 28568554, 29261372, 35735578, 41272076, 57137108, 71471156, 72226133, 125074523, 144452266, 250149046, 288904532, 500298092, 732579349, 1465158698, 2930317396, 5128055443, 10256110886, 20512221772]

約数ペア:

[(1, 20512221772), (2, 10256110886), (4, 5128055443), (7, 2930317396), (14, 1465158698), (28, 732579349), (41, 500298092), (71, 288904532), (82, 250149046), (142, 144452266), (164, 125074523), (284, 72226133), (287, 71471156), (359, 57137108), (497, 41272076), (574, 35735578), (701, 29261372), (718, 28568554), (994, 20636038), (1148, 17867789), (1402, 14630686), (1436, 14284277), (1988, 10318019), (2513, 8162444), (2804, 7315343), (2911, 7046452), (4907, 4180196), (5026, 4081222), (5822, 3523226), (9814, 2090098), (10052, 2040611), (11644, 1761613), (14719, 1393588), (19628, 1045049), (20377, 1006636), (25489, 804748), (28741, 713692), (29438, 696794), (40754, 503318), (49771, 412132), (50978, 402374), (57482, 356846), (58876, 348397), (81508, 251659), (99542, 206066), (101956, 201187), (103033, 199084), (114964, 178423)]