40540390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:249

約数の個数: 64

約数和(自身を含む): 83280960

約数和(自身を除く): 42740570

約数列:

[1, 2, 5, 10, 11, 22, 41, 55, 82, 89, 101, 110, 178, 202, 205, 410, 445, 451, 505, 890, 902, 979, 1010, 1111, 1958, 2222, 2255, 3649, 4141, 4510, 4895, 5555, 7298, 8282, 8989, 9790, 11110, 17978, 18245, 20705, 36490, 40139, 41410, 44945, 45551, 80278, 89890, 91102, 98879, 197758, 200695, 227755, 368549, 401390, 455510, 494395, 737098, 988790, 1842745, 3685490, 4054039, 8108078, 20270195, 40540390]

約数ペア:

[(1, 40540390), (2, 20270195), (5, 8108078), (10, 4054039), (11, 3685490), (22, 1842745), (41, 988790), (55, 737098), (82, 494395), (89, 455510), (101, 401390), (110, 368549), (178, 227755), (202, 200695), (205, 197758), (410, 98879), (445, 91102), (451, 89890), (505, 80278), (890, 45551), (902, 44945), (979, 41410), (1010, 40139), (1111, 36490), (1958, 20705), (2222, 18245), (2255, 17978), (3649, 11110), (4141, 9790), (4510, 8989), (4895, 8282), (5555, 7298)]