20911400

素因数分解:

$2^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{5503}}^1$

素因数の和:5538

約数の個数: 48

約数和(自身を含む): 51187200

約数和(自身を除く): 30275800

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 152, 190, 200, 380, 475, 760, 950, 1900, 3800, 5503, 11006, 22012, 27515, 44024, 55030, 104557, 110060, 137575, 209114, 220120, 275150, 418228, 522785, 550300, 836456, 1045570, 1100600, 2091140, 2613925, 4182280, 5227850, 10455700, 20911400]

約数ペア:

[(1, 20911400), (2, 10455700), (4, 5227850), (5, 4182280), (8, 2613925), (10, 2091140), (19, 1100600), (20, 1045570), (25, 836456), (38, 550300), (40, 522785), (50, 418228), (76, 275150), (95, 220120), (100, 209114), (152, 137575), (190, 110060), (200, 104557), (380, 55030), (475, 44024), (760, 27515), (950, 22012), (1900, 11006), (3800, 5503)]