394909840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{379721}}^1$

素因数の和:379747

約数の個数: 40

約数和(自身を含む): 988796088

約数和(自身を除く): 593886248

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 379721, 759442, 1518884, 1898605, 3037768, 3797210, 4936373, 6075536, 7594420, 9872746, 15188840, 19745492, 24681865, 30377680, 39490984, 49363730, 78981968, 98727460, 197454920, 394909840]

約数ペア:

[(1, 394909840), (2, 197454920), (4, 98727460), (5, 78981968), (8, 49363730), (10, 39490984), (13, 30377680), (16, 24681865), (20, 19745492), (26, 15188840), (40, 9872746), (52, 7594420), (65, 6075536), (80, 4936373), (104, 3797210), (130, 3037768), (208, 1898605), (260, 1518884), (520, 759442), (1040, 379721)]