21639408

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{64403}}^1$

素因数の和:64421

約数の個数: 40

約数和(自身を含む): 63888768

約数和(自身を除く): 42249360

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 84, 112, 168, 336, 64403, 128806, 193209, 257612, 386418, 450821, 515224, 772836, 901642, 1030448, 1352463, 1545672, 1803284, 2704926, 3091344, 3606568, 5409852, 7213136, 10819704, 21639408]

約数ペア:

[(1, 21639408), (2, 10819704), (3, 7213136), (4, 5409852), (6, 3606568), (7, 3091344), (8, 2704926), (12, 1803284), (14, 1545672), (16, 1352463), (21, 1030448), (24, 901642), (28, 772836), (42, 515224), (48, 450821), (56, 386418), (84, 257612), (112, 193209), (168, 128806), (336, 64403)]