217872060

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{518743}}^1$

素因数の和:518762

約数の個数: 48

約数和(自身を含む): 697191936

約数和(自身を除く): 479319876

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 518743, 1037486, 1556229, 2074972, 2593715, 3112458, 3631201, 5187430, 6224916, 7262402, 7781145, 10374860, 10893603, 14524804, 15562290, 18156005, 21787206, 31124580, 36312010, 43574412, 54468015, 72624020, 108936030, 217872060]

約数ペア:

[(1, 217872060), (2, 108936030), (3, 72624020), (4, 54468015), (5, 43574412), (6, 36312010), (7, 31124580), (10, 21787206), (12, 18156005), (14, 15562290), (15, 14524804), (20, 10893603), (21, 10374860), (28, 7781145), (30, 7262402), (35, 6224916), (42, 5187430), (60, 3631201), (70, 3112458), (84, 2593715), (105, 2074972), (140, 1556229), (210, 1037486), (420, 518743)]