21309610

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{157}}^1\times {\mathrm{277}}^1$

素因数の和:455

約数の個数: 48

約数和(自身を含む): 45066024

約数和(自身を除く): 23756414

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 157, 245, 277, 314, 490, 554, 785, 1099, 1385, 1570, 1939, 2198, 2770, 3878, 5495, 7693, 9695, 10990, 13573, 15386, 19390, 27146, 38465, 43489, 67865, 76930, 86978, 135730, 217445, 304423, 434890, 608846, 1522115, 2130961, 3044230, 4261922, 10654805, 21309610]

約数ペア:

[(1, 21309610), (2, 10654805), (5, 4261922), (7, 3044230), (10, 2130961), (14, 1522115), (35, 608846), (49, 434890), (70, 304423), (98, 217445), (157, 135730), (245, 86978), (277, 76930), (314, 67865), (490, 43489), (554, 38465), (785, 27146), (1099, 19390), (1385, 15386), (1570, 13573), (1939, 10990), (2198, 9695), (2770, 7693), (3878, 5495)]