38608640

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:198

約数の個数: 144

約数和(自身を含む): 109885440

約数和(自身を除く): 71276800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 64, 70, 80, 112, 124, 128, 139, 140, 155, 160, 217, 224, 248, 256, 278, 280, 310, 320, 434, 448, 496, 556, 560, 620, 640, 695, 868, 896, 973, 992, 1085, 1112, 1120, 1240, 1280, 1390, 1736, 1792, 1946, 1984, 2170, 2224, 2240, 2480, 2780, 3472, 3892, 3968, 4309, 4340, 4448, 4480, 4865, 4960, 5560, 6944, 7784, 7936, 8618, 8680, 8896, 8960, 9730, 9920, 11120, 13888, 15568, 17236, 17360, 17792, 19460, 19840, 21545, 22240, 27776, 30163, 31136, 34472, 34720, 35584, 38920, 39680, 43090, 44480, 55552, 60326, 62272, 68944, 69440, 77840, 86180, 88960, 120652, 124544, 137888, 138880, 150815, 155680, 172360, 177920, 241304, 249088, 275776, 277760, 301630, 311360, 344720, 482608, 551552, 603260, 622720, 689440, 965216, 1103104, 1206520, 1245440, 1378880, 1930432, 2413040, 2757760, 3860864, 4826080, 5515520, 7721728, 9652160, 19304320, 38608640]

約数ペア:

[(1, 38608640), (2, 19304320), (4, 9652160), (5, 7721728), (7, 5515520), (8, 4826080), (10, 3860864), (14, 2757760), (16, 2413040), (20, 1930432), (28, 1378880), (31, 1245440), (32, 1206520), (35, 1103104), (40, 965216), (56, 689440), (62, 622720), (64, 603260), (70, 551552), (80, 482608), (112, 344720), (124, 311360), (128, 301630), (139, 277760), (140, 275776), (155, 249088), (160, 241304), (217, 177920), (224, 172360), (248, 155680), (256, 150815), (278, 138880), (280, 137888), (310, 124544), (320, 120652), (434, 88960), (448, 86180), (496, 77840), (556, 69440), (560, 68944), (620, 62272), (640, 60326), (695, 55552), (868, 44480), (896, 43090), (973, 39680), (992, 38920), (1085, 35584), (1112, 34720), (1120, 34472), (1240, 31136), (1280, 30163), (1390, 27776), (1736, 22240), (1792, 21545), (1946, 19840), (1984, 19460), (2170, 17792), (2224, 17360), (2240, 17236), (2480, 15568), (2780, 13888), (3472, 11120), (3892, 9920), (3968, 9730), (4309, 8960), (4340, 8896), (4448, 8680), (4480, 8618), (4865, 7936), (4960, 7784), (5560, 6944)]