280145313

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{193337}}^1$

素因数の和:193373

約数の個数: 24

約数和(自身を含む): 482571648

約数和(自身を除く): 202426335

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 161, 207, 483, 1449, 193337, 580011, 1353359, 1740033, 4060077, 4446751, 12180231, 13340253, 31127257, 40020759, 93381771, 280145313]

約数ペア:

[(1, 280145313), (3, 93381771), (7, 40020759), (9, 31127257), (21, 13340253), (23, 12180231), (63, 4446751), (69, 4060077), (161, 1740033), (207, 1353359), (483, 580011), (1449, 193337)]