20515706080

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{38287}}^1$

素因数の和:38516

約数の個数: 96

約数和(自身を含む): 51581287296

約数和(自身を除く): 31065581216

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 197, 272, 340, 394, 544, 680, 788, 985, 1360, 1576, 1970, 2720, 3152, 3349, 3940, 6304, 6698, 7880, 13396, 15760, 16745, 26792, 31520, 33490, 38287, 53584, 66980, 76574, 107168, 133960, 153148, 191435, 267920, 306296, 382870, 535840, 612592, 650879, 765740, 1225184, 1301758, 1531480, 2603516, 3062960, 3254395, 5207032, 6125920, 6508790, 7542539, 10414064, 13017580, 15085078, 20828128, 26035160, 30170156, 37712695, 52070320, 60340312, 75425390, 104140640, 120680624, 128223163, 150850780, 241361248, 256446326, 301701560, 512892652, 603403120, 641115815, 1025785304, 1206806240, 1282231630, 2051570608, 2564463260, 4103141216, 5128926520, 10257853040, 20515706080]

約数ペア:

[(1, 20515706080), (2, 10257853040), (4, 5128926520), (5, 4103141216), (8, 2564463260), (10, 2051570608), (16, 1282231630), (17, 1206806240), (20, 1025785304), (32, 641115815), (34, 603403120), (40, 512892652), (68, 301701560), (80, 256446326), (85, 241361248), (136, 150850780), (160, 128223163), (170, 120680624), (197, 104140640), (272, 75425390), (340, 60340312), (394, 52070320), (544, 37712695), (680, 30170156), (788, 26035160), (985, 20828128), (1360, 15085078), (1576, 13017580), (1970, 10414064), (2720, 7542539), (3152, 6508790), (3349, 6125920), (3940, 5207032), (6304, 3254395), (6698, 3062960), (7880, 2603516), (13396, 1531480), (15760, 1301758), (16745, 1225184), (26792, 765740), (31520, 650879), (33490, 612592), (38287, 535840), (53584, 382870), (66980, 306296), (76574, 267920), (107168, 191435), (133960, 153148)]