21072816

素因数分解:

$2^4\times 3^2\times {\mathrm{61}}^1\times {\mathrm{2399}}^1$

素因数の和:2474

約数の個数: 60

約数和(自身を含む): 59966400

約数和(自身を除く): 38893584

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 61, 72, 122, 144, 183, 244, 366, 488, 549, 732, 976, 1098, 1464, 2196, 2399, 2928, 4392, 4798, 7197, 8784, 9596, 14394, 19192, 21591, 28788, 38384, 43182, 57576, 86364, 115152, 146339, 172728, 292678, 345456, 439017, 585356, 878034, 1170712, 1317051, 1756068, 2341424, 2634102, 3512136, 5268204, 7024272, 10536408, 21072816]

約数ペア:

[(1, 21072816), (2, 10536408), (3, 7024272), (4, 5268204), (6, 3512136), (8, 2634102), (9, 2341424), (12, 1756068), (16, 1317051), (18, 1170712), (24, 878034), (36, 585356), (48, 439017), (61, 345456), (72, 292678), (122, 172728), (144, 146339), (183, 115152), (244, 86364), (366, 57576), (488, 43182), (549, 38384), (732, 28788), (976, 21591), (1098, 19192), (1464, 14394), (2196, 9596), (2399, 8784), (2928, 7197), (4392, 4798)]