21105900

素因数分解:

$2^2\times 3^3\times 5^2\times {\mathrm{7817}}^1$

素因数の和:7840

約数の個数: 72

約数和(自身を含む): 67860240

約数和(自身を除く): 46754340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 45, 50, 54, 60, 75, 90, 100, 108, 135, 150, 180, 225, 270, 300, 450, 540, 675, 900, 1350, 2700, 7817, 15634, 23451, 31268, 39085, 46902, 70353, 78170, 93804, 117255, 140706, 156340, 195425, 211059, 234510, 281412, 351765, 390850, 422118, 469020, 586275, 703530, 781700, 844236, 1055295, 1172550, 1407060, 1758825, 2110590, 2345100, 3517650, 4221180, 5276475, 7035300, 10552950, 21105900]

約数ペア:

[(1, 21105900), (2, 10552950), (3, 7035300), (4, 5276475), (5, 4221180), (6, 3517650), (9, 2345100), (10, 2110590), (12, 1758825), (15, 1407060), (18, 1172550), (20, 1055295), (25, 844236), (27, 781700), (30, 703530), (36, 586275), (45, 469020), (50, 422118), (54, 390850), (60, 351765), (75, 281412), (90, 234510), (100, 211059), (108, 195425), (135, 156340), (150, 140706), (180, 117255), (225, 93804), (270, 78170), (300, 70353), (450, 46902), (540, 39085), (675, 31268), (900, 23451), (1350, 15634), (2700, 7817)]