20413995

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1$

素因数の和:224

約数の個数: 64

約数和(自身を含む): 39813120

約数和(自身を除く): 19399125

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 69, 79, 105, 107, 115, 161, 237, 321, 345, 395, 483, 535, 553, 749, 805, 1185, 1605, 1659, 1817, 2247, 2415, 2461, 2765, 3745, 5451, 7383, 8295, 8453, 9085, 11235, 12305, 12719, 17227, 25359, 27255, 36915, 38157, 42265, 51681, 59171, 63595, 86135, 126795, 177513, 190785, 194419, 258405, 295855, 583257, 887565, 972095, 1360933, 2916285, 4082799, 6804665, 20413995]

約数ペア:

[(1, 20413995), (3, 6804665), (5, 4082799), (7, 2916285), (15, 1360933), (21, 972095), (23, 887565), (35, 583257), (69, 295855), (79, 258405), (105, 194419), (107, 190785), (115, 177513), (161, 126795), (237, 86135), (321, 63595), (345, 59171), (395, 51681), (483, 42265), (535, 38157), (553, 36915), (749, 27255), (805, 25359), (1185, 17227), (1605, 12719), (1659, 12305), (1817, 11235), (2247, 9085), (2415, 8453), (2461, 8295), (2765, 7383), (3745, 5451)]