389280640

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2803}}^1$

素因数の和:2860

約数の個数: 128

約数和(自身を含む): 1098270720

約数和(自身を除く): 708990080

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, 140, 155, 160, 217, 224, 248, 280, 310, 320, 434, 448, 496, 560, 620, 640, 868, 896, 992, 1085, 1120, 1240, 1736, 1984, 2170, 2240, 2480, 2803, 3472, 3968, 4340, 4480, 4960, 5606, 6944, 8680, 9920, 11212, 13888, 14015, 17360, 19621, 19840, 22424, 27776, 28030, 34720, 39242, 44848, 56060, 69440, 78484, 86893, 89696, 98105, 112120, 138880, 156968, 173786, 179392, 196210, 224240, 313936, 347572, 358784, 392420, 434465, 448480, 608251, 627872, 695144, 784840, 868930, 896960, 1216502, 1255744, 1390288, 1569680, 1737860, 1793920, 2433004, 2511488, 2780576, 3041255, 3139360, 3475720, 4866008, 5561152, 6082510, 6278720, 6951440, 9732016, 11122304, 12165020, 12557440, 13902880, 19464032, 24330040, 27805760, 38928064, 48660080, 55611520, 77856128, 97320160, 194640320, 389280640]

約数ペア:

[(1, 389280640), (2, 194640320), (4, 97320160), (5, 77856128), (7, 55611520), (8, 48660080), (10, 38928064), (14, 27805760), (16, 24330040), (20, 19464032), (28, 13902880), (31, 12557440), (32, 12165020), (35, 11122304), (40, 9732016), (56, 6951440), (62, 6278720), (64, 6082510), (70, 5561152), (80, 4866008), (112, 3475720), (124, 3139360), (128, 3041255), (140, 2780576), (155, 2511488), (160, 2433004), (217, 1793920), (224, 1737860), (248, 1569680), (280, 1390288), (310, 1255744), (320, 1216502), (434, 896960), (448, 868930), (496, 784840), (560, 695144), (620, 627872), (640, 608251), (868, 448480), (896, 434465), (992, 392420), (1085, 358784), (1120, 347572), (1240, 313936), (1736, 224240), (1984, 196210), (2170, 179392), (2240, 173786), (2480, 156968), (2803, 138880), (3472, 112120), (3968, 98105), (4340, 89696), (4480, 86893), (4960, 78484), (5606, 69440), (6944, 56060), (8680, 44848), (9920, 39242), (11212, 34720), (13888, 28030), (14015, 27776), (17360, 22424), (19621, 19840)]