129456640

素因数分解:

$2^9\times 5^1\times {\mathrm{61}}^1\times {\mathrm{829}}^1$

素因数の和:913

約数の個数: 80

約数和(自身を含む): 315861480

約数和(自身を除く): 186404840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 256, 305, 320, 488, 512, 610, 640, 829, 976, 1220, 1280, 1658, 1952, 2440, 2560, 3316, 3904, 4145, 4880, 6632, 7808, 8290, 9760, 13264, 15616, 16580, 19520, 26528, 31232, 33160, 39040, 50569, 53056, 66320, 78080, 101138, 106112, 132640, 156160, 202276, 212224, 252845, 265280, 404552, 424448, 505690, 530560, 809104, 1011380, 1061120, 1618208, 2022760, 2122240, 3236416, 4045520, 6472832, 8091040, 12945664, 16182080, 25891328, 32364160, 64728320, 129456640]

約数ペア:

[(1, 129456640), (2, 64728320), (4, 32364160), (5, 25891328), (8, 16182080), (10, 12945664), (16, 8091040), (20, 6472832), (32, 4045520), (40, 3236416), (61, 2122240), (64, 2022760), (80, 1618208), (122, 1061120), (128, 1011380), (160, 809104), (244, 530560), (256, 505690), (305, 424448), (320, 404552), (488, 265280), (512, 252845), (610, 212224), (640, 202276), (829, 156160), (976, 132640), (1220, 106112), (1280, 101138), (1658, 78080), (1952, 66320), (2440, 53056), (2560, 50569), (3316, 39040), (3904, 33160), (4145, 31232), (4880, 26528), (6632, 19520), (7808, 16580), (8290, 15616), (9760, 13264)]