20959140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{271}}^1\times {\mathrm{1289}}^1$

素因数の和:1572

約数の個数: 48

約数和(自身を含む): 58947840

約数和(自身を除く): 37988700

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 271, 542, 813, 1084, 1289, 1355, 1626, 2578, 2710, 3252, 3867, 4065, 5156, 5420, 6445, 7734, 8130, 12890, 15468, 16260, 19335, 25780, 38670, 77340, 349319, 698638, 1047957, 1397276, 1746595, 2095914, 3493190, 4191828, 5239785, 6986380, 10479570, 20959140]

約数ペア:

[(1, 20959140), (2, 10479570), (3, 6986380), (4, 5239785), (5, 4191828), (6, 3493190), (10, 2095914), (12, 1746595), (15, 1397276), (20, 1047957), (30, 698638), (60, 349319), (271, 77340), (542, 38670), (813, 25780), (1084, 19335), (1289, 16260), (1355, 15468), (1626, 12890), (2578, 8130), (2710, 7734), (3252, 6445), (3867, 5420), (4065, 5156)]