21630455

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2957}}^1$

素因数の和:2999

約数の個数: 32

約数和(自身を含む): 34076160

約数和(自身を除く): 12445705

約数列:

[1, 5, 7, 11, 19, 35, 55, 77, 95, 133, 209, 385, 665, 1045, 1463, 2957, 7315, 14785, 20699, 32527, 56183, 103495, 162635, 227689, 280915, 393281, 618013, 1138445, 1966405, 3090065, 4326091, 21630455]

約数ペア:

[(1, 21630455), (5, 4326091), (7, 3090065), (11, 1966405), (19, 1138445), (35, 618013), (55, 393281), (77, 280915), (95, 227689), (133, 162635), (209, 103495), (385, 56183), (665, 32527), (1045, 20699), (1463, 14785), (2957, 7315)]