21720088

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6737}}^1$

素因数の和:6787

約数の個数: 32

約数和(自身を含む): 45279360

約数和(自身を除く): 23559272

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 248, 403, 806, 1612, 3224, 6737, 13474, 26948, 53896, 87581, 175162, 208847, 350324, 417694, 700648, 835388, 1670776, 2715011, 5430022, 10860044, 21720088]

約数ペア:

[(1, 21720088), (2, 10860044), (4, 5430022), (8, 2715011), (13, 1670776), (26, 835388), (31, 700648), (52, 417694), (62, 350324), (104, 208847), (124, 175162), (248, 87581), (403, 53896), (806, 26948), (1612, 13474), (3224, 6737)]