71561980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{26903}}^1$

素因数の和:26938

約数の個数: 48

約数和(自身を含む): 180794880

約数和(自身を除く): 109232900

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 26903, 53806, 107612, 134515, 188321, 269030, 376642, 511157, 538060, 753284, 941605, 1022314, 1883210, 2044628, 2555785, 3578099, 3766420, 5111570, 7156198, 10223140, 14312396, 17890495, 35780990, 71561980]

約数ペア:

[(1, 71561980), (2, 35780990), (4, 17890495), (5, 14312396), (7, 10223140), (10, 7156198), (14, 5111570), (19, 3766420), (20, 3578099), (28, 2555785), (35, 2044628), (38, 1883210), (70, 1022314), (76, 941605), (95, 753284), (133, 538060), (140, 511157), (190, 376642), (266, 269030), (380, 188321), (532, 134515), (665, 107612), (1330, 53806), (2660, 26903)]