20293155

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{647}}^1$

素因数の和:716

約数の個数: 48

約数和(自身を含む): 38211264

約数和(自身を除く): 17918109

約数列:

[1, 3, 5, 9, 15, 17, 41, 45, 51, 85, 123, 153, 205, 255, 369, 615, 647, 697, 765, 1845, 1941, 2091, 3235, 3485, 5823, 6273, 9705, 10455, 10999, 26527, 29115, 31365, 32997, 54995, 79581, 98991, 132635, 164985, 238743, 397905, 450959, 494955, 1193715, 1352877, 2254795, 4058631, 6764385, 20293155]

約数ペア:

[(1, 20293155), (3, 6764385), (5, 4058631), (9, 2254795), (15, 1352877), (17, 1193715), (41, 494955), (45, 450959), (51, 397905), (85, 238743), (123, 164985), (153, 132635), (205, 98991), (255, 79581), (369, 54995), (615, 32997), (647, 31365), (697, 29115), (765, 26527), (1845, 10999), (1941, 10455), (2091, 9705), (3235, 6273), (3485, 5823)]