256107160

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{149}}^1\times {\mathrm{443}}^1$

素因数の和:700

約数の個数: 64

約数和(自身を含む): 587412000

約数和(自身を除く): 331304840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 149, 194, 298, 388, 443, 485, 596, 745, 776, 886, 970, 1192, 1490, 1772, 1940, 2215, 2980, 3544, 3880, 4430, 5960, 8860, 14453, 17720, 28906, 42971, 57812, 66007, 72265, 85942, 115624, 132014, 144530, 171884, 214855, 264028, 289060, 330035, 343768, 429710, 528056, 578120, 660070, 859420, 1320140, 1718840, 2640280, 6402679, 12805358, 25610716, 32013395, 51221432, 64026790, 128053580, 256107160]

約数ペア:

[(1, 256107160), (2, 128053580), (4, 64026790), (5, 51221432), (8, 32013395), (10, 25610716), (20, 12805358), (40, 6402679), (97, 2640280), (149, 1718840), (194, 1320140), (298, 859420), (388, 660070), (443, 578120), (485, 528056), (596, 429710), (745, 343768), (776, 330035), (886, 289060), (970, 264028), (1192, 214855), (1490, 171884), (1772, 144530), (1940, 132014), (2215, 115624), (2980, 85942), (3544, 72265), (3880, 66007), (4430, 57812), (5960, 42971), (8860, 28906), (14453, 17720)]