256061260

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{199}}^1$

素因数の和:336

約数の個数: 144

約数和(自身を含む): 683726400

約数和(自身を除く): 427665140

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 101, 130, 140, 182, 196, 199, 202, 245, 260, 364, 398, 404, 455, 490, 505, 637, 707, 796, 910, 980, 995, 1010, 1274, 1313, 1393, 1414, 1820, 1990, 2020, 2548, 2587, 2626, 2786, 2828, 3185, 3535, 3980, 4949, 5174, 5252, 5572, 6370, 6565, 6965, 7070, 9191, 9751, 9898, 10348, 12740, 12935, 13130, 13930, 14140, 18109, 18382, 19502, 19796, 20099, 24745, 25870, 26260, 27860, 36218, 36764, 39004, 40198, 45955, 48755, 49490, 51740, 64337, 72436, 80396, 90545, 91910, 97510, 98980, 100495, 126763, 128674, 140693, 181090, 183820, 195020, 200990, 253526, 257348, 261287, 281386, 321685, 362180, 401980, 507052, 522574, 562772, 633815, 643370, 703465, 984851, 1045148, 1267630, 1286740, 1306435, 1406930, 1829009, 1969702, 2535260, 2612870, 2813860, 3658018, 3939404, 4924255, 5225740, 7316036, 9145045, 9848510, 12803063, 18290090, 19697020, 25606126, 36580180, 51212252, 64015315, 128030630, 256061260]

約数ペア:

[(1, 256061260), (2, 128030630), (4, 64015315), (5, 51212252), (7, 36580180), (10, 25606126), (13, 19697020), (14, 18290090), (20, 12803063), (26, 9848510), (28, 9145045), (35, 7316036), (49, 5225740), (52, 4924255), (65, 3939404), (70, 3658018), (91, 2813860), (98, 2612870), (101, 2535260), (130, 1969702), (140, 1829009), (182, 1406930), (196, 1306435), (199, 1286740), (202, 1267630), (245, 1045148), (260, 984851), (364, 703465), (398, 643370), (404, 633815), (455, 562772), (490, 522574), (505, 507052), (637, 401980), (707, 362180), (796, 321685), (910, 281386), (980, 261287), (995, 257348), (1010, 253526), (1274, 200990), (1313, 195020), (1393, 183820), (1414, 181090), (1820, 140693), (1990, 128674), (2020, 126763), (2548, 100495), (2587, 98980), (2626, 97510), (2786, 91910), (2828, 90545), (3185, 80396), (3535, 72436), (3980, 64337), (4949, 51740), (5174, 49490), (5252, 48755), (5572, 45955), (6370, 40198), (6565, 39004), (6965, 36764), (7070, 36218), (9191, 27860), (9751, 26260), (9898, 25870), (10348, 24745), (12740, 20099), (12935, 19796), (13130, 19502), (13930, 18382), (14140, 18109)]