15381760

素因数分解:

$2^8\times 5^1\times {\mathrm{61}}^1\times {\mathrm{197}}^1$

素因数の和:279

約数の個数: 72

約数和(自身を含む): 37638216

約数和(自身を除く): 22256456

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 197, 244, 256, 305, 320, 394, 488, 610, 640, 788, 976, 985, 1220, 1280, 1576, 1952, 1970, 2440, 3152, 3904, 3940, 4880, 6304, 7808, 7880, 9760, 12017, 12608, 15616, 15760, 19520, 24034, 25216, 31520, 39040, 48068, 50432, 60085, 63040, 78080, 96136, 120170, 126080, 192272, 240340, 252160, 384544, 480680, 769088, 961360, 1538176, 1922720, 3076352, 3845440, 7690880, 15381760]

約数ペア:

[(1, 15381760), (2, 7690880), (4, 3845440), (5, 3076352), (8, 1922720), (10, 1538176), (16, 961360), (20, 769088), (32, 480680), (40, 384544), (61, 252160), (64, 240340), (80, 192272), (122, 126080), (128, 120170), (160, 96136), (197, 78080), (244, 63040), (256, 60085), (305, 50432), (320, 48068), (394, 39040), (488, 31520), (610, 25216), (640, 24034), (788, 19520), (976, 15760), (985, 15616), (1220, 12608), (1280, 12017), (1576, 9760), (1952, 7880), (1970, 7808), (2440, 6304), (3152, 4880), (3904, 3940)]