21077805

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{191}}^1\times {\mathrm{1051}}^1$

素因数の和:1257

約数の個数: 32

約数和(自身を含む): 38780928

約数和(自身を除く): 17703123

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 191, 573, 955, 1051, 1337, 2865, 3153, 4011, 5255, 6685, 7357, 15765, 20055, 22071, 36785, 110355, 200741, 602223, 1003705, 1405187, 3011115, 4215561, 7025935, 21077805]

約数ペア:

[(1, 21077805), (3, 7025935), (5, 4215561), (7, 3011115), (15, 1405187), (21, 1003705), (35, 602223), (105, 200741), (191, 110355), (573, 36785), (955, 22071), (1051, 20055), (1337, 15765), (2865, 7357), (3153, 6685), (4011, 5255)]