17826620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{571}}^1$

素因数の和:810

約数の個数: 48

約数和(自身を含む): 43051008

約数和(自身を除く): 25224388

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 223, 446, 571, 892, 1115, 1142, 1561, 2230, 2284, 2855, 3122, 3997, 4460, 5710, 6244, 7805, 7994, 11420, 15610, 15988, 19985, 31220, 39970, 79940, 127333, 254666, 509332, 636665, 891331, 1273330, 1782662, 2546660, 3565324, 4456655, 8913310, 17826620]

約数ペア:

[(1, 17826620), (2, 8913310), (4, 4456655), (5, 3565324), (7, 2546660), (10, 1782662), (14, 1273330), (20, 891331), (28, 636665), (35, 509332), (70, 254666), (140, 127333), (223, 79940), (446, 39970), (571, 31220), (892, 19985), (1115, 15988), (1142, 15610), (1561, 11420), (2230, 7994), (2284, 7805), (2855, 6244), (3122, 5710), (3997, 4460)]