28645540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:146

約数の個数: 144

約数和(自身を含む): 80438400

約数和(自身を除く): 51792860

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 19, 20, 22, 28, 35, 38, 44, 55, 70, 76, 77, 89, 95, 110, 121, 133, 140, 154, 178, 190, 209, 220, 242, 266, 308, 356, 380, 385, 418, 445, 484, 532, 605, 623, 665, 770, 836, 847, 890, 979, 1045, 1210, 1246, 1330, 1463, 1540, 1691, 1694, 1780, 1958, 2090, 2299, 2420, 2492, 2660, 2926, 3115, 3382, 3388, 3916, 4180, 4235, 4598, 4895, 5852, 6230, 6764, 6853, 7315, 8455, 8470, 9196, 9790, 10769, 11495, 11837, 12460, 13706, 14630, 16093, 16910, 16940, 18601, 19580, 21538, 22990, 23674, 27412, 29260, 32186, 33820, 34265, 37202, 43076, 45980, 47348, 53845, 59185, 64372, 68530, 74404, 75383, 80465, 93005, 107690, 118370, 130207, 137060, 150766, 160930, 186010, 204611, 215380, 236740, 260414, 301532, 321860, 372020, 376915, 409222, 520828, 651035, 753830, 818444, 1023055, 1302070, 1432277, 1507660, 2046110, 2604140, 2864554, 4092220, 5729108, 7161385, 14322770, 28645540]

約数ペア:

[(1, 28645540), (2, 14322770), (4, 7161385), (5, 5729108), (7, 4092220), (10, 2864554), (11, 2604140), (14, 2046110), (19, 1507660), (20, 1432277), (22, 1302070), (28, 1023055), (35, 818444), (38, 753830), (44, 651035), (55, 520828), (70, 409222), (76, 376915), (77, 372020), (89, 321860), (95, 301532), (110, 260414), (121, 236740), (133, 215380), (140, 204611), (154, 186010), (178, 160930), (190, 150766), (209, 137060), (220, 130207), (242, 118370), (266, 107690), (308, 93005), (356, 80465), (380, 75383), (385, 74404), (418, 68530), (445, 64372), (484, 59185), (532, 53845), (605, 47348), (623, 45980), (665, 43076), (770, 37202), (836, 34265), (847, 33820), (890, 32186), (979, 29260), (1045, 27412), (1210, 23674), (1246, 22990), (1330, 21538), (1463, 19580), (1540, 18601), (1691, 16940), (1694, 16910), (1780, 16093), (1958, 14630), (2090, 13706), (2299, 12460), (2420, 11837), (2492, 11495), (2660, 10769), (2926, 9790), (3115, 9196), (3382, 8470), (3388, 8455), (3916, 7315), (4180, 6853), (4235, 6764), (4598, 6230), (4895, 5852)]