19541960

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{8009}}^1$

素因数の和:8081

約数の個数: 32

約数和(自身を含む): 44695800

約数和(自身を除く): 25153840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 8009, 16018, 32036, 40045, 64072, 80090, 160180, 320360, 488549, 977098, 1954196, 2442745, 3908392, 4885490, 9770980, 19541960]

約数ペア:

[(1, 19541960), (2, 9770980), (4, 4885490), (5, 3908392), (8, 2442745), (10, 1954196), (20, 977098), (40, 488549), (61, 320360), (122, 160180), (244, 80090), (305, 64072), (488, 40045), (610, 32036), (1220, 16018), (2440, 8009)]