18681945

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{641}}^1$

素因数の和:745

約数の個数: 32

約数和(自身を含む): 31432320

約数和(自身を除く): 12750375

約数列:

[1, 3, 5, 15, 29, 67, 87, 145, 201, 335, 435, 641, 1005, 1923, 1943, 3205, 5829, 9615, 9715, 18589, 29145, 42947, 55767, 92945, 128841, 214735, 278835, 644205, 1245463, 3736389, 6227315, 18681945]

約数ペア:

[(1, 18681945), (3, 6227315), (5, 3736389), (15, 1245463), (29, 644205), (67, 278835), (87, 214735), (145, 128841), (201, 92945), (335, 55767), (435, 42947), (641, 29145), (1005, 18589), (1923, 9715), (1943, 9615), (3205, 5829)]