21690400

素因数分解:

$2^5\times 5^2\times {\mathrm{19}}^1\times {\mathrm{1427}}^1$

素因数の和:1466

約数の個数: 72

約数和(自身を含む): 55777680

約数和(自身を除く): 34087280

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 32, 38, 40, 50, 76, 80, 95, 100, 152, 160, 190, 200, 304, 380, 400, 475, 608, 760, 800, 950, 1427, 1520, 1900, 2854, 3040, 3800, 5708, 7135, 7600, 11416, 14270, 15200, 22832, 27113, 28540, 35675, 45664, 54226, 57080, 71350, 108452, 114160, 135565, 142700, 216904, 228320, 271130, 285400, 433808, 542260, 570800, 677825, 867616, 1084520, 1141600, 1355650, 2169040, 2711300, 4338080, 5422600, 10845200, 21690400]

約数ペア:

[(1, 21690400), (2, 10845200), (4, 5422600), (5, 4338080), (8, 2711300), (10, 2169040), (16, 1355650), (19, 1141600), (20, 1084520), (25, 867616), (32, 677825), (38, 570800), (40, 542260), (50, 433808), (76, 285400), (80, 271130), (95, 228320), (100, 216904), (152, 142700), (160, 135565), (190, 114160), (200, 108452), (304, 71350), (380, 57080), (400, 54226), (475, 45664), (608, 35675), (760, 28540), (800, 27113), (950, 22832), (1427, 15200), (1520, 14270), (1900, 11416), (2854, 7600), (3040, 7135), (3800, 5708)]