31249520

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{4027}}^1$

素因数の和:4137

約数の個数: 40

約数和(自身を含む): 73422384

約数和(自身を除く): 42172864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 388, 485, 776, 970, 1552, 1940, 3880, 4027, 7760, 8054, 16108, 20135, 32216, 40270, 64432, 80540, 161080, 322160, 390619, 781238, 1562476, 1953095, 3124952, 3906190, 6249904, 7812380, 15624760, 31249520]

約数ペア:

[(1, 31249520), (2, 15624760), (4, 7812380), (5, 6249904), (8, 3906190), (10, 3124952), (16, 1953095), (20, 1562476), (40, 781238), (80, 390619), (97, 322160), (194, 161080), (388, 80540), (485, 64432), (776, 40270), (970, 32216), (1552, 20135), (1940, 16108), (3880, 8054), (4027, 7760)]