408055720

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{251}}^1\times {\mathrm{419}}^1$

素因数の和:778

約数の個数: 64

約数和(自身を含む): 933508800

約数和(自身を除く): 525453080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 251, 388, 419, 485, 502, 776, 838, 970, 1004, 1255, 1676, 1940, 2008, 2095, 2510, 3352, 3880, 4190, 5020, 8380, 10040, 16760, 24347, 40643, 48694, 81286, 97388, 105169, 121735, 162572, 194776, 203215, 210338, 243470, 325144, 406430, 420676, 486940, 525845, 812860, 841352, 973880, 1051690, 1625720, 2103380, 4206760, 10201393, 20402786, 40805572, 51006965, 81611144, 102013930, 204027860, 408055720]

約数ペア:

[(1, 408055720), (2, 204027860), (4, 102013930), (5, 81611144), (8, 51006965), (10, 40805572), (20, 20402786), (40, 10201393), (97, 4206760), (194, 2103380), (251, 1625720), (388, 1051690), (419, 973880), (485, 841352), (502, 812860), (776, 525845), (838, 486940), (970, 420676), (1004, 406430), (1255, 325144), (1676, 243470), (1940, 210338), (2008, 203215), (2095, 194776), (2510, 162572), (3352, 121735), (3880, 105169), (4190, 97388), (5020, 81286), (8380, 48694), (10040, 40643), (16760, 24347)]