19598080

素因数分解:

$2^8\times 5^1\times {\mathrm{61}}^1\times {\mathrm{251}}^1$

素因数の和:333

約数の個数: 72

約数和(自身を含む): 47903184

約数和(自身を除く): 28305104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 251, 256, 305, 320, 488, 502, 610, 640, 976, 1004, 1220, 1255, 1280, 1952, 2008, 2440, 2510, 3904, 4016, 4880, 5020, 7808, 8032, 9760, 10040, 15311, 15616, 16064, 19520, 20080, 30622, 32128, 39040, 40160, 61244, 64256, 76555, 78080, 80320, 122488, 153110, 160640, 244976, 306220, 321280, 489952, 612440, 979904, 1224880, 1959808, 2449760, 3919616, 4899520, 9799040, 19598080]

約数ペア:

[(1, 19598080), (2, 9799040), (4, 4899520), (5, 3919616), (8, 2449760), (10, 1959808), (16, 1224880), (20, 979904), (32, 612440), (40, 489952), (61, 321280), (64, 306220), (80, 244976), (122, 160640), (128, 153110), (160, 122488), (244, 80320), (251, 78080), (256, 76555), (305, 64256), (320, 61244), (488, 40160), (502, 39040), (610, 32128), (640, 30622), (976, 20080), (1004, 19520), (1220, 16064), (1255, 15616), (1280, 15311), (1952, 10040), (2008, 9760), (2440, 8032), (2510, 7808), (3904, 5020), (4016, 4880)]