20553975

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{7027}}^1$

素因数の和:7056

約数の個数: 36

約数和(自身を含む): 39651976

約数和(自身を除く): 19098001

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 7027, 21081, 35135, 63243, 91351, 105405, 175675, 274053, 316215, 456755, 527025, 822159, 1370265, 1581075, 2283775, 4110795, 6851325, 20553975]

約数ペア:

[(1, 20553975), (3, 6851325), (5, 4110795), (9, 2283775), (13, 1581075), (15, 1370265), (25, 822159), (39, 527025), (45, 456755), (65, 316215), (75, 274053), (117, 175675), (195, 105405), (225, 91351), (325, 63243), (585, 35135), (975, 21081), (2925, 7027)]