20670765

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:158

約数の個数: 64

約数和(自身を含む): 37497600

約数和(自身を除く): 16826835

約数列:

[1, 3, 5, 15, 19, 29, 41, 57, 61, 87, 95, 123, 145, 183, 205, 285, 305, 435, 551, 615, 779, 915, 1159, 1189, 1653, 1769, 2337, 2501, 2755, 3477, 3567, 3895, 5307, 5795, 5945, 7503, 8265, 8845, 11685, 12505, 17385, 17835, 22591, 26535, 33611, 37515, 47519, 67773, 72529, 100833, 112955, 142557, 168055, 217587, 237595, 338865, 362645, 504165, 712785, 1087935, 1378051, 4134153, 6890255, 20670765]

約数ペア:

[(1, 20670765), (3, 6890255), (5, 4134153), (15, 1378051), (19, 1087935), (29, 712785), (41, 504165), (57, 362645), (61, 338865), (87, 237595), (95, 217587), (123, 168055), (145, 142557), (183, 112955), (205, 100833), (285, 72529), (305, 67773), (435, 47519), (551, 37515), (615, 33611), (779, 26535), (915, 22591), (1159, 17835), (1189, 17385), (1653, 12505), (1769, 11685), (2337, 8845), (2501, 8265), (2755, 7503), (3477, 5945), (3567, 5795), (3895, 5307)]