28618840

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{8039}}^1$

素因数の和:8139

約数の個数: 32

約数和(自身を含む): 65124000

約数和(自身を除く): 36505160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 8039, 16078, 32156, 40195, 64312, 80390, 160780, 321560, 715471, 1430942, 2861884, 3577355, 5723768, 7154710, 14309420, 28618840]

約数ペア:

[(1, 28618840), (2, 14309420), (4, 7154710), (5, 5723768), (8, 3577355), (10, 2861884), (20, 1430942), (40, 715471), (89, 321560), (178, 160780), (356, 80390), (445, 64312), (712, 40195), (890, 32156), (1780, 16078), (3560, 8039)]