19781440

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{8831}}^1$

素因数の和:8855

約数の個数: 56

約数和(自身を含む): 53839872

約数和(自身を除く): 34058432

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 140, 160, 224, 280, 320, 448, 560, 1120, 2240, 8831, 17662, 35324, 44155, 61817, 70648, 88310, 123634, 141296, 176620, 247268, 282592, 309085, 353240, 494536, 565184, 618170, 706480, 989072, 1236340, 1412960, 1978144, 2472680, 2825920, 3956288, 4945360, 9890720, 19781440]

約数ペア:

[(1, 19781440), (2, 9890720), (4, 4945360), (5, 3956288), (7, 2825920), (8, 2472680), (10, 1978144), (14, 1412960), (16, 1236340), (20, 989072), (28, 706480), (32, 618170), (35, 565184), (40, 494536), (56, 353240), (64, 309085), (70, 282592), (80, 247268), (112, 176620), (140, 141296), (160, 123634), (224, 88310), (280, 70648), (320, 61817), (448, 44155), (560, 35324), (1120, 17662), (2240, 8831)]