281856771

素因数分解:

$3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{22039}}^1$

素因数の和:22088

約数の個数: 36

約数和(自身を含む): 489949200

約数和(自身を除く): 208092429

約数列:

[1, 3, 7, 9, 21, 29, 49, 63, 87, 147, 203, 261, 441, 609, 1421, 1827, 4263, 12789, 22039, 66117, 154273, 198351, 462819, 639131, 1079911, 1388457, 1917393, 3239733, 4473917, 5752179, 9719199, 13421751, 31317419, 40265253, 93952257, 281856771]

約数ペア:

[(1, 281856771), (3, 93952257), (7, 40265253), (9, 31317419), (21, 13421751), (29, 9719199), (49, 5752179), (63, 4473917), (87, 3239733), (147, 1917393), (203, 1388457), (261, 1079911), (441, 639131), (609, 462819), (1421, 198351), (1827, 154273), (4263, 66117), (12789, 22039)]