21863060

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{179}}^1\times {\mathrm{197}}^1$

素因数の和:416

約数の個数: 48

約数和(自身を含む): 47900160

約数和(自身を除く): 26037100

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 179, 197, 310, 358, 394, 620, 716, 788, 895, 985, 1790, 1970, 3580, 3940, 5549, 6107, 11098, 12214, 22196, 24428, 27745, 30535, 35263, 55490, 61070, 70526, 110980, 122140, 141052, 176315, 352630, 705260, 1093153, 2186306, 4372612, 5465765, 10931530, 21863060]

約数ペア:

[(1, 21863060), (2, 10931530), (4, 5465765), (5, 4372612), (10, 2186306), (20, 1093153), (31, 705260), (62, 352630), (124, 176315), (155, 141052), (179, 122140), (197, 110980), (310, 70526), (358, 61070), (394, 55490), (620, 35263), (716, 30535), (788, 27745), (895, 24428), (985, 22196), (1790, 12214), (1970, 11098), (3580, 6107), (3940, 5549)]