398647179

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{89123}}^1$

素因数の和:89207

約数の個数: 24

約数和(自身を含む): 667360512

約数和(自身を除く): 268713333

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 89123, 267369, 623861, 802107, 1871583, 5614749, 6327733, 18983199, 44294131, 56949597, 132882393, 398647179]

約数ペア:

[(1, 398647179), (3, 132882393), (7, 56949597), (9, 44294131), (21, 18983199), (63, 6327733), (71, 5614749), (213, 1871583), (497, 802107), (639, 623861), (1491, 267369), (4473, 89123)]