21676820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2663}}^1$

素因数の和:2720

約数の個数: 48

約数和(自身を含む): 51020928

約数和(自身を除く): 29344108

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 148, 185, 220, 370, 407, 740, 814, 1628, 2035, 2663, 4070, 5326, 8140, 10652, 13315, 26630, 29293, 53260, 58586, 98531, 117172, 146465, 197062, 292930, 394124, 492655, 585860, 985310, 1083841, 1970620, 2167682, 4335364, 5419205, 10838410, 21676820]

約数ペア:

[(1, 21676820), (2, 10838410), (4, 5419205), (5, 4335364), (10, 2167682), (11, 1970620), (20, 1083841), (22, 985310), (37, 585860), (44, 492655), (55, 394124), (74, 292930), (110, 197062), (148, 146465), (185, 117172), (220, 98531), (370, 58586), (407, 53260), (740, 29293), (814, 26630), (1628, 13315), (2035, 10652), (2663, 8140), (4070, 5326)]