256887040

素因数分解:

$2^8\times 5^1\times {\mathrm{97}}^1\times {\mathrm{2069}}^1$

素因数の和:2187

約数の個数: 72

約数和(自身を含む): 621968760

約数和(自身を除く): 365081720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 97, 128, 160, 194, 256, 320, 388, 485, 640, 776, 970, 1280, 1552, 1940, 2069, 3104, 3880, 4138, 6208, 7760, 8276, 10345, 12416, 15520, 16552, 20690, 24832, 31040, 33104, 41380, 62080, 66208, 82760, 124160, 132416, 165520, 200693, 264832, 331040, 401386, 529664, 662080, 802772, 1003465, 1324160, 1605544, 2006930, 2648320, 3211088, 4013860, 6422176, 8027720, 12844352, 16055440, 25688704, 32110880, 51377408, 64221760, 128443520, 256887040]

約数ペア:

[(1, 256887040), (2, 128443520), (4, 64221760), (5, 51377408), (8, 32110880), (10, 25688704), (16, 16055440), (20, 12844352), (32, 8027720), (40, 6422176), (64, 4013860), (80, 3211088), (97, 2648320), (128, 2006930), (160, 1605544), (194, 1324160), (256, 1003465), (320, 802772), (388, 662080), (485, 529664), (640, 401386), (776, 331040), (970, 264832), (1280, 200693), (1552, 165520), (1940, 132416), (2069, 124160), (3104, 82760), (3880, 66208), (4138, 62080), (6208, 41380), (7760, 33104), (8276, 31040), (10345, 24832), (12416, 20690), (15520, 16552)]