20747265

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:131

約数の個数: 96

約数和(自身を含む): 44126208

約数和(自身を除く): 23378943

約数列:

[1, 3, 5, 7, 11, 15, 21, 23, 33, 35, 55, 69, 71, 77, 105, 115, 121, 161, 165, 213, 231, 253, 345, 355, 363, 385, 483, 497, 605, 759, 781, 805, 847, 1065, 1155, 1265, 1491, 1633, 1771, 1815, 2343, 2415, 2485, 2541, 2783, 3795, 3905, 4235, 4899, 5313, 5467, 7455, 8165, 8349, 8591, 8855, 11431, 11715, 12705, 13915, 16401, 17963, 19481, 24495, 25773, 26565, 27335, 34293, 41745, 42955, 53889, 57155, 58443, 60137, 82005, 89815, 97405, 125741, 128865, 171465, 180411, 197593, 269445, 292215, 300685, 377223, 592779, 628705, 902055, 987965, 1383151, 1886115, 2963895, 4149453, 6915755, 20747265]

約数ペア:

[(1, 20747265), (3, 6915755), (5, 4149453), (7, 2963895), (11, 1886115), (15, 1383151), (21, 987965), (23, 902055), (33, 628705), (35, 592779), (55, 377223), (69, 300685), (71, 292215), (77, 269445), (105, 197593), (115, 180411), (121, 171465), (161, 128865), (165, 125741), (213, 97405), (231, 89815), (253, 82005), (345, 60137), (355, 58443), (363, 57155), (385, 53889), (483, 42955), (497, 41745), (605, 34293), (759, 27335), (781, 26565), (805, 25773), (847, 24495), (1065, 19481), (1155, 17963), (1265, 16401), (1491, 13915), (1633, 12705), (1771, 11715), (1815, 11431), (2343, 8855), (2415, 8591), (2485, 8349), (2541, 8165), (2783, 7455), (3795, 5467), (3905, 5313), (4235, 4899)]