30378640

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8831}}^1$

素因数の和:8887

約数の個数: 40

約数和(自身を含む): 72281088

約数和(自身を除く): 41902448

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 8831, 17662, 35324, 44155, 70648, 88310, 141296, 176620, 353240, 379733, 706480, 759466, 1518932, 1898665, 3037864, 3797330, 6075728, 7594660, 15189320, 30378640]

約数ペア:

[(1, 30378640), (2, 15189320), (4, 7594660), (5, 6075728), (8, 3797330), (10, 3037864), (16, 1898665), (20, 1518932), (40, 759466), (43, 706480), (80, 379733), (86, 353240), (172, 176620), (215, 141296), (344, 88310), (430, 70648), (688, 44155), (860, 35324), (1720, 17662), (3440, 8831)]