201720645

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{213461}}^1$

素因数の和:213482

約数の個数: 32

約数和(自身を含む): 409847040

約数和(自身を除く): 208126395

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 213461, 640383, 1067305, 1494227, 1921149, 3201915, 4482681, 5763447, 7471135, 9605745, 13448043, 22413405, 28817235, 40344129, 67240215, 201720645]

約数ペア:

[(1, 201720645), (3, 67240215), (5, 40344129), (7, 28817235), (9, 22413405), (15, 13448043), (21, 9605745), (27, 7471135), (35, 5763447), (45, 4482681), (63, 3201915), (105, 1921149), (135, 1494227), (189, 1067305), (315, 640383), (945, 213461)]