20992275

素因数分解:

$3^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{1181}}^1$

素因数の和:1276

約数の個数: 36

約数和(自身を含む): 38107680

約数和(自身を除く): 17115405

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 79, 225, 237, 395, 711, 1181, 1185, 1975, 3543, 3555, 5905, 5925, 10629, 17715, 17775, 29525, 53145, 88575, 93299, 265725, 279897, 466495, 839691, 1399485, 2332475, 4198455, 6997425, 20992275]

約数ペア:

[(1, 20992275), (3, 6997425), (5, 4198455), (9, 2332475), (15, 1399485), (25, 839691), (45, 466495), (75, 279897), (79, 265725), (225, 93299), (237, 88575), (395, 53145), (711, 29525), (1181, 17775), (1185, 17715), (1975, 10629), (3543, 5925), (3555, 5905)]