20922800

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{2753}}^1$

素因数の和:2790

約数の個数: 60

約数和(自身を含む): 52931880

約数和(自身を除く): 32009080

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 152, 190, 200, 304, 380, 400, 475, 760, 950, 1520, 1900, 2753, 3800, 5506, 7600, 11012, 13765, 22024, 27530, 44048, 52307, 55060, 68825, 104614, 110120, 137650, 209228, 220240, 261535, 275300, 418456, 523070, 550600, 836912, 1046140, 1101200, 1307675, 2092280, 2615350, 4184560, 5230700, 10461400, 20922800]

約数ペア:

[(1, 20922800), (2, 10461400), (4, 5230700), (5, 4184560), (8, 2615350), (10, 2092280), (16, 1307675), (19, 1101200), (20, 1046140), (25, 836912), (38, 550600), (40, 523070), (50, 418456), (76, 275300), (80, 261535), (95, 220240), (100, 209228), (152, 137650), (190, 110120), (200, 104614), (304, 68825), (380, 55060), (400, 52307), (475, 44048), (760, 27530), (950, 22024), (1520, 13765), (1900, 11012), (2753, 7600), (3800, 5506)]