21997300

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{16921}}^1$

素因数の和:16948

約数の個数: 36

約数和(自身を含む): 51409036

約数和(自身を除く): 29411736

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 16921, 33842, 67684, 84605, 169210, 219973, 338420, 423025, 439946, 846050, 879892, 1099865, 1692100, 2199730, 4399460, 5499325, 10998650, 21997300]

約数ペア:

[(1, 21997300), (2, 10998650), (4, 5499325), (5, 4399460), (10, 2199730), (13, 1692100), (20, 1099865), (25, 879892), (26, 846050), (50, 439946), (52, 423025), (65, 338420), (100, 219973), (130, 169210), (260, 84605), (325, 67684), (650, 33842), (1300, 16921)]