21048519

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:279

約数の個数: 32

約数和(自身を含む): 30942720

約数和(自身を除く): 9894201

約数列:

[1, 3, 23, 29, 67, 69, 87, 157, 201, 471, 667, 1541, 1943, 2001, 3611, 4553, 4623, 5829, 10519, 10833, 13659, 31557, 44689, 104719, 134067, 241937, 305051, 314157, 725811, 915153, 7016173, 21048519]

約数ペア:

[(1, 21048519), (3, 7016173), (23, 915153), (29, 725811), (67, 314157), (69, 305051), (87, 241937), (157, 134067), (201, 104719), (471, 44689), (667, 31557), (1541, 13659), (1943, 10833), (2001, 10519), (3611, 5829), (4553, 4623)]