259777520

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^3\times {\mathrm{109}}^1$

素因数の和:215

約数の個数: 80

約数和(自身を含む): 629840640

約数和(自身を除く): 370063120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 109, 124, 155, 218, 248, 310, 436, 496, 545, 620, 872, 961, 1090, 1240, 1744, 1922, 2180, 2480, 3379, 3844, 4360, 4805, 6758, 7688, 8720, 9610, 13516, 15376, 16895, 19220, 27032, 29791, 33790, 38440, 54064, 59582, 67580, 76880, 104749, 119164, 135160, 148955, 209498, 238328, 270320, 297910, 418996, 476656, 523745, 595820, 837992, 1047490, 1191640, 1675984, 2094980, 2383280, 3247219, 4189960, 6494438, 8379920, 12988876, 16236095, 25977752, 32472190, 51955504, 64944380, 129888760, 259777520]

約数ペア:

[(1, 259777520), (2, 129888760), (4, 64944380), (5, 51955504), (8, 32472190), (10, 25977752), (16, 16236095), (20, 12988876), (31, 8379920), (40, 6494438), (62, 4189960), (80, 3247219), (109, 2383280), (124, 2094980), (155, 1675984), (218, 1191640), (248, 1047490), (310, 837992), (436, 595820), (496, 523745), (545, 476656), (620, 418996), (872, 297910), (961, 270320), (1090, 238328), (1240, 209498), (1744, 148955), (1922, 135160), (2180, 119164), (2480, 104749), (3379, 76880), (3844, 67580), (4360, 59582), (4805, 54064), (6758, 38440), (7688, 33790), (8720, 29791), (9610, 27032), (13516, 19220), (15376, 16895)]