997960

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{409}}^1$

素因数の和:481

約数の個数: 32

約数和(自身を含む): 2287800

約数和(自身を除く): 1289840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 409, 488, 610, 818, 1220, 1636, 2045, 2440, 3272, 4090, 8180, 16360, 24949, 49898, 99796, 124745, 199592, 249490, 498980, 997960]

約数ペア:

[(1, 997960), (2, 498980), (4, 249490), (5, 199592), (8, 124745), (10, 99796), (20, 49898), (40, 24949), (61, 16360), (122, 8180), (244, 4090), (305, 3272), (409, 2440), (488, 2045), (610, 1636), (818, 1220)]