21966280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4129}}^1$

素因数の和:4166

約数の個数: 64

約数和(自身を含む): 59472000

約数和(自身を除く): 37505720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 56, 70, 76, 95, 133, 140, 152, 190, 266, 280, 380, 532, 665, 760, 1064, 1330, 2660, 4129, 5320, 8258, 16516, 20645, 28903, 33032, 41290, 57806, 78451, 82580, 115612, 144515, 156902, 165160, 231224, 289030, 313804, 392255, 549157, 578060, 627608, 784510, 1098314, 1156120, 1569020, 2196628, 2745785, 3138040, 4393256, 5491570, 10983140, 21966280]

約数ペア:

[(1, 21966280), (2, 10983140), (4, 5491570), (5, 4393256), (7, 3138040), (8, 2745785), (10, 2196628), (14, 1569020), (19, 1156120), (20, 1098314), (28, 784510), (35, 627608), (38, 578060), (40, 549157), (56, 392255), (70, 313804), (76, 289030), (95, 231224), (133, 165160), (140, 156902), (152, 144515), (190, 115612), (266, 82580), (280, 78451), (380, 57806), (532, 41290), (665, 33032), (760, 28903), (1064, 20645), (1330, 16516), (2660, 8258), (4129, 5320)]