640114840

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{695777}}^1$

素因数の和:695811

約数の個数: 32

約数和(自身を含む): 1502880480

約数和(自身を除く): 862765640

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 695777, 1391554, 2783108, 3478885, 5566216, 6957770, 13915540, 16002871, 27831080, 32005742, 64011484, 80014355, 128022968, 160028710, 320057420, 640114840]

約数ペア:

[(1, 640114840), (2, 320057420), (4, 160028710), (5, 128022968), (8, 80014355), (10, 64011484), (20, 32005742), (23, 27831080), (40, 16002871), (46, 13915540), (92, 6957770), (115, 5566216), (184, 3478885), (230, 2783108), (460, 1391554), (920, 695777)]