1978840

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{811}}^1$

素因数の和:883

約数の個数: 32

約数和(自身を含む): 4530960

約数和(自身を除く): 2552120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 811, 1220, 1622, 2440, 3244, 4055, 6488, 8110, 16220, 32440, 49471, 98942, 197884, 247355, 395768, 494710, 989420, 1978840]

約数ペア:

[(1, 1978840), (2, 989420), (4, 494710), (5, 395768), (8, 247355), (10, 197884), (20, 98942), (40, 49471), (61, 32440), (122, 16220), (244, 8110), (305, 6488), (488, 4055), (610, 3244), (811, 2440), (1220, 1622)]