256246.00000000

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{251}}^1$

素因数の和:374

約数の個数: 80

約数和(自身を含む): 64308384

約数和(自身を除く): 38987504

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 97, 104, 130, 194, 208, 251, 260, 388, 485, 502, 520, 776, 970, 1004, 1040, 1255, 1261, 1552, 1940, 2008, 2510, 2522, 3263, 3880, 4016, 5020, 5044, 6305, 6526, 7760, 10040, 10088, 12610, 13052, 16315, 20080, 20176, 24347, 25220, 26104, 32630, 48694, 50440, 52208, 65260, 97388, 100880, 121735, 130520, 194776, 243470, 261040, 316511, 389552, 486940, 633022, 973880, 1266044, 1582555, 1947760, 2532088, 3165110, 5064176, 6330220, 12660440, 25320880]

約数ペア:

[(1, 25320880), (2, 12660440), (4, 6330220), (5, 5064176), (8, 3165110), (10, 2532088), (13, 1947760), (16, 1582555), (20, 1266044), (26, 973880), (40, 633022), (52, 486940), (65, 389552), (80, 316511), (97, 261040), (104, 243470), (130, 194776), (194, 130520), (208, 121735), (251, 100880), (260, 97388), (388, 65260), (485, 52208), (502, 50440), (520, 48694), (776, 32630), (970, 26104), (1004, 25220), (1040, 24347), (1255, 20176), (1261, 20080), (1552, 16315), (1940, 13052), (2008, 12610), (2510, 10088), (2522, 10040), (3263, 7760), (3880, 6526), (4016, 6305), (5020, 5044)]