21806356

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{569}}^1$

素因数の和:664

約数の個数: 48

約数和(自身を含む): 45581760

約数和(自身を除く): 23775404

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 67, 134, 143, 268, 286, 569, 572, 737, 871, 1138, 1474, 1742, 2276, 2948, 3484, 6259, 7397, 9581, 12518, 14794, 19162, 25036, 29588, 38123, 38324, 76246, 81367, 152492, 162734, 325468, 419353, 495599, 838706, 991198, 1677412, 1982396, 5451589, 10903178, 21806356]

約数ペア:

[(1, 21806356), (2, 10903178), (4, 5451589), (11, 1982396), (13, 1677412), (22, 991198), (26, 838706), (44, 495599), (52, 419353), (67, 325468), (134, 162734), (143, 152492), (268, 81367), (286, 76246), (569, 38324), (572, 38123), (737, 29588), (871, 25036), (1138, 19162), (1474, 14794), (1742, 12518), (2276, 9581), (2948, 7397), (3484, 6259)]