64728320

素因数分解:

$2^8\times 5^1\times {\mathrm{61}}^1\times {\mathrm{829}}^1$

素因数の和:911

約数の個数: 72

約数和(自身を含む): 157776360

約数和(自身を除く): 93048040

約数列:

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

約数ペア:

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