20065045

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:266

約数の個数: 64

約数和(自身を含む): 34191360

約数和(自身を除く): 14126315

約数列:

[1, 5, 7, 11, 13, 19, 35, 55, 65, 77, 91, 95, 133, 143, 209, 211, 247, 385, 455, 665, 715, 1001, 1045, 1055, 1235, 1463, 1477, 1729, 2321, 2717, 2743, 4009, 5005, 7315, 7385, 8645, 11605, 13585, 13715, 16247, 19019, 19201, 20045, 28063, 30173, 44099, 52117, 81235, 95095, 96005, 140315, 150865, 211211, 220495, 260585, 308693, 364819, 573287, 1056055, 1543465, 1824095, 2866435, 4013009, 20065045]

約数ペア:

[(1, 20065045), (5, 4013009), (7, 2866435), (11, 1824095), (13, 1543465), (19, 1056055), (35, 573287), (55, 364819), (65, 308693), (77, 260585), (91, 220495), (95, 211211), (133, 150865), (143, 140315), (209, 96005), (211, 95095), (247, 81235), (385, 52117), (455, 44099), (665, 30173), (715, 28063), (1001, 20045), (1045, 19201), (1055, 19019), (1235, 16247), (1463, 13715), (1477, 13585), (1729, 11605), (2321, 8645), (2717, 7385), (2743, 7315), (4009, 5005)]